diff --git a/.dir-locals.el b/.dir-locals.el
new file mode 100644
index 0000000000000000000000000000000000000000..2ea06d8d07a67db860c36b1844f7b8f729e86233
--- /dev/null
+++ b/.dir-locals.el
@@ -0,0 +1,5 @@
+;;; Directory Local Variables
+;;; For more information see (info "(emacs) Directory Variables")
+
+((scheme-mode
+  (indent-tabs-mode . nil)))
diff --git a/haunt.scm b/haunt.scm
index 89a36d14654476cb49f02c69232008ebec4e0d72..5aba81ce1c62c8bac6954856dc7155296dafbb74 100644
--- a/haunt.scm
+++ b/haunt.scm
@@ -1,44 +1,44 @@
 (use-modules (haunt post)
-			 (haunt page)
-			 (haunt site)
-			 (haunt asset)
-			 (haunt html)
-			 (haunt builder blog)
-			 (haunt builder atom)
-			 (haunt builder rss)
-			 (haunt builder assets)
-			 (haunt reader commonmark)
-			 (local micronews paged-blog)
-			 (local theme)
-			 (local common)
-			 (local pages)
-			 (srfi srfi-19))
+             (haunt page)
+             (haunt site)
+             (haunt asset)
+             (haunt html)
+             (haunt builder blog)
+             (haunt builder atom)
+             (haunt builder rss)
+             (haunt builder assets)
+             (haunt reader commonmark)
+             (local micronews paged-blog)
+             (local theme)
+             (local common)
+             (local pages)
+             (srfi srfi-19))
 
 (define* (static-page name title sxml #:key (theme local-site-theme))
   (lambda (site posts)
-	(list
-	 (make-page (string-append name ".html")
-				((theme-layout theme) site title sxml)
-				sxml->html))))
+    (list
+     (make-page (string-append name ".html")
+                ((theme-layout theme) site title sxml)
+                sxml->html))))
 
 (define (local-post-slug post)
   (string-append (date->string (post-date post) "~Y/~m/")
-				 (basename (post-file-name post) ".md")))
+                 (basename (post-file-name post) ".md")))
 
 (site #:title "#faui2k17"
       #:domain "faui2k17.de"
       #:readers (list commonmark-reader)
-	  #:make-slug local-post-slug
+      #:make-slug local-post-slug
       #:builders (list (paged-blog #:theme local-site-theme
-								   #:prefix "post")
-					   (atom-feed #:blog-prefix "post")
-					   (atom-feeds-by-tag #:prefix "tags"
-										  #:blog-prefix "post")
-					   (rss-feed #:blog-prefix "post")
-					   (static-page "meta" "Meta"
-									%meta-page)
-					   (static-page "irc" "IRC"
-									%irc-page)
-					   (static-page "whatsapp" "WhatsApp Links"
-									%whatsapp-page)
-					   (static-directory "static" "static")))
+                                   #:prefix "post")
+                       (atom-feed #:blog-prefix "post")
+                       (atom-feeds-by-tag #:prefix "tags"
+                                          #:blog-prefix "post")
+                       (rss-feed #:blog-prefix "post")
+                       (static-page "meta" "Meta"
+                                    %meta-page)
+                       (static-page "irc" "IRC"
+                                    %irc-page)
+                       (static-page "whatsapp" "WhatsApp Links"
+                                    %whatsapp-page)
+                       (static-directory "static" "")))
diff --git a/local/common.scm b/local/common.scm
index f1d1164667c7d0e862fc82d903e64b5cf572c7de..d7818e55e8aa2e05b6632010a5742d8541d40731 100644
--- a/local/common.scm
+++ b/local/common.scm
@@ -4,7 +4,7 @@
 
 (define (ulist . items)
   `(ul ,(map (lambda (item) (list 'li item))
-			 items)))
+             items)))
 
 (define (link name uri)
   `(a (@ (href ,uri)) ,name))
diff --git a/local/micronews/paged-blog.scm b/local/micronews/paged-blog.scm
index 1161c008b418e7e998b2091e17566a1e8b763ef3..1c90f9c7bd7974055953e79a4a356d36e862fe68 100644
--- a/local/micronews/paged-blog.scm
+++ b/local/micronews/paged-blog.scm
@@ -14,35 +14,35 @@ listing.
 
 See (haunt builder blog)'s blog for more details."
   (define (group-by lst n)
-	(let loop ((left n) (current '()) (groups '()) (rest lst))
-	  (cond ((null? rest) (reverse! (cons current groups)))
-			((> left 0) (loop (1- left) (cons (car rest) current)
-							  groups (cdr rest)))
-			(else (loop n '() (cons (reverse! current) groups) rest)))))
+    (let loop ((left n) (current '()) (groups '()) (rest lst))
+      (cond ((null? rest) (reverse! (cons current groups)))
+            ((> left 0) (loop (1- left) (cons (car rest) current)
+                              groups (cdr rest)))
+            (else (loop n '() (cons (reverse! current) groups) rest)))))
   
   (lambda (site posts)
-	(let* ((sorted (posts/reverse-chronological posts))
-		   (grouped (group-by (reverse sorted) per-page))
-		   (last-group-nr (length grouped)))
+    (let* ((sorted (posts/reverse-chronological posts))
+           (grouped (group-by (reverse sorted) per-page))
+           (last-group-nr (length grouped)))
 
-	  (define (create-index-page group i)
-		(let ((title (format #f "faui2k17 - Page ~d" i)))
-		  (make-page
-		   ;; file name
-		   (if (= i 1)
-			   "index.html"
-			   (format #f "page-~d.html" i))
-		   ;; content
-		   ((theme-layout theme) site title
-			((theme-collection-template theme)
-			 site title group prefix i (= i last-group-nr)))
-		   ;; function
-		   sxml->html)))
-	  
-	  (append
-	   ;; index pages
-	   (map create-index-page grouped (map 1+ (iota (length grouped))))
-	   ;; blog pages
-	   ((blog #:theme theme #:prefix prefix
-			  #:collections '())
-		site posts)))))
+      (define (create-index-page group i)
+        (let ((title (format #f "faui2k17 - Page ~d" i)))
+          (make-page
+           ;; file name
+           (if (= i 1)
+               "index.html"
+               (format #f "page-~d.html" i))
+           ;; content
+           ((theme-layout theme) site title
+            ((theme-collection-template theme)
+             site title group prefix i (= i last-group-nr)))
+           ;; function
+           sxml->html)))
+      
+      (append
+       ;; index pages
+       (map create-index-page grouped (map 1+ (iota (length grouped))))
+       ;; blog pages
+       ((blog #:theme theme #:prefix prefix
+              #:collections '())
+        site posts)))))
diff --git a/local/pages.scm b/local/pages.scm
index b85af17e03ad02b7118d83cb13e7458e7cb95b6e..264b6a63b63eabeea5485f9cc504dbfd11112f30 100644
--- a/local/pages.scm
+++ b/local/pages.scm
@@ -2,104 +2,104 @@
 (define-module (local pages)
   #:use-module (local common)
   #:export (%meta-page
-			%irc-page
-			%whatsapp-page))
+            %irc-page
+            %whatsapp-page))
 
  ;; /meta.html
 
 (define %meta-page
   `(article
-	(p "Auf dieser Seite sind Kurznachrichten und andere "
-	   "Informationen (hauptsächlich) für Studenten der "
-	   ,(link "FAU Erlangen" "https://www.fau.de/")
-	   " im Studiengang "
-	   ,(link "Informatik" "https://www.cs.fau.de/")
-	   ".")
-	(p "Alle Inhalte werden von einem statischem Webseiten "
-	   "Generator verwaltet, und jeder ist eingeladen mit "
-	   "beizutragen. Besucht hierzu das "
-	   ,(link "GitLab Repo" "https://gitlab.cs.fau.de/faui2k17/generator#beitragen")
-	   ", auf welches mit SSO (IdM-Kennung) zugegriffen "
-	   "werden kann.")
-	(p "Fragen/Vorschläge technischer oder rechtlicher Art bitte an "
-	   "den derzeitigen "
-	   ,(link "Webmaster" "https://wwwcip.informatik.uni-erlangen.de/~oj14ozun/")
-	   " schicken.")))
+    (p "Auf dieser Seite sind Kurznachrichten und andere "
+       "Informationen (hauptsächlich) für Studenten der "
+       ,(link "FAU Erlangen" "https://www.fau.de/")
+       " im Studiengang "
+       ,(link "Informatik" "https://www.cs.fau.de/")
+       ".")
+    (p "Alle Inhalte werden von einem statischem Webseiten "
+       "Generator verwaltet, und jeder ist eingeladen mit "
+       "beizutragen. Besucht hierzu das "
+       ,(link "GitLab Repo" "https://gitlab.cs.fau.de/faui2k17/generator#beitragen")
+       ", auf welches mit SSO (IdM-Kennung) zugegriffen "
+       "werden kann.")
+    (p "Fragen/Vorschläge technischer oder rechtlicher Art bitte an "
+       "den derzeitigen "
+       ,(link "Webmaster" "https://wwwcip.informatik.uni-erlangen.de/~oj14ozun/")
+       " schicken.")))
 
  ;; /irc.html
 
 (define %irc-page
   `(article
-	(p "IRC Channel des Jahrgangs: "
-	   ,(link '(code "#faui2k17") "irc://irc.fau.de:6667/faui2k17"))
-	(p "Für die die noch nie IRC verwendet haben, kann einem der "
-	   ,(link '(em "IRC-Guide") "https://fsi.cs.fau.de/dw/kontakt/irc")
-	   " von der FSI helfen die Basics zu verstehen.")
-	(p "Auch möglich: Verbinden via "
-	   ,(link "Matrix" "https://matrix.to/#/#_ircnet_#faui2k17:irc.snt.utwente.nl"))))
+    (p "IRC Channel des Jahrgangs: "
+       ,(link '(code "#faui2k17") "irc://irc.fau.de:6667/faui2k17"))
+    (p "Für die die noch nie IRC verwendet haben, kann einem der "
+       ,(link '(em "IRC-Guide") "https://fsi.cs.fau.de/dw/kontakt/irc")
+       " von der FSI helfen die Basics zu verstehen.")
+    (p "Auch möglich: Verbinden via "
+       ,(link "Matrix" "https://matrix.to/#/#_ircnet_#faui2k17:irc.snt.utwente.nl"))))
 
  ;; /whatsapp.html
 
 (define %whatsapp-page
   `(article
-	(p "Diese Seite enthält direkte "
-	   ,(link '(em "Invite Links")
-			  "https://faq.whatsapp.com/en/wp/23704967?lang=de#invite")
-	   " zu WhatsApp Gruppen welche vom Semester 2017/18 erstellt wurden.")
+    (p "Diese Seite enthält direkte "
+       ,(link '(em "Invite Links")
+              "https://faq.whatsapp.com/en/wp/23704967?lang=de#invite")
+       " zu WhatsApp Gruppen welche vom Semester 2017/18 erstellt wurden.")
 
-	(h1 "Allgemeine Gruppen")
-	,(ulist
-	  (link '(em "Erstis Gruppe")
-			"https://chat.whatsapp.com/Le3bBFeddlM3UD6XUduudm"))
+    (h1 "Allgemeine Gruppen")
+    ,(ulist
+      (link '(em "Erstis Gruppe")
+            "https://chat.whatsapp.com/Le3bBFeddlM3UD6XUduudm"))
  
-	(h1 "Vorlesungen aus dem 4. Semester")
-	,(ulist
-	  (link "Rechnerkommunikation"
-			"https://chat.whatsapp.com/KkIfQkNspYsDGc1e2D5xaM")
-	  (link "Theorie der Programmierung"
-			"https://chat.whatsapp.com/F9oXhsXeaLwJjSYkuIYqbO")
-	  (link "Algorithmik Kontinuierlicher Systeme"
-			"https://chat.whatsapp.com/KqvTD8lXAuA0qnLHx208bK")
-	  (link "Mathe C4"
-			"https://chat.whatsapp.com/4eofzccqOfd51ky7Q0bgD1"))
+    (h1 "Vorlesungen aus dem 4. Semester")
+    ,(ulist
+      (link "Rechnerkommunikation"
+            "https://chat.whatsapp.com/KkIfQkNspYsDGc1e2D5xaM")
+      (link "Theorie der Programmierung"
+            "https://chat.whatsapp.com/F9oXhsXeaLwJjSYkuIYqbO")
+      (link "Algorithmik Kontinuierlicher Systeme"
+            "https://chat.whatsapp.com/KqvTD8lXAuA0qnLHx208bK")
+      (link "Mathe C4"
+            "https://chat.whatsapp.com/4eofzccqOfd51ky7Q0bgD1"))
 
-	(h1 "Vorlesungen aus dem 3. Semester")
-	,(ulist
-	  (link "Berechenbarkeit formeller Systeme"
-			"https://chat.whatsapp.com/7cTwkQ8dVqF4RSl8QMq0ru")
-	  (link "Software Entwickelung"
-			"https://chat.whatsapp.com/ATOD2sUNAWP2CoukTlo4J2")
-	  (link "Grundlagen der Logik in der Informatik"
-			"https://chat.whatsapp.com/0ofifeh7DVQ4mobOTmHod4")
-	  (link "Systemprogrammierung 2"
-			"https://chat.whatsapp.com/IavyuLwBNeIJR4EHay8JKk")
-	  '(span (em "Mathe C3")
-			 " existiert nicht mehr, wurde zu "
-			 (em "Mathe C4")))
+    (h1 "Vorlesungen aus dem 3. Semester")
+    ,(ulist
+      (link "Berechenbarkeit formeller Systeme"
+            "https://chat.whatsapp.com/7cTwkQ8dVqF4RSl8QMq0ru")
+      (link "Software Entwickelung"
+            "https://chat.whatsapp.com/ATOD2sUNAWP2CoukTlo4J2")
+      (link "Grundlagen der Logik in der Informatik"
+            "https://chat.whatsapp.com/0ofifeh7DVQ4mobOTmHod4")
+      (link "Systemprogrammierung 2"
+            "https://chat.whatsapp.com/IavyuLwBNeIJR4EHay8JKk")
+      '(span (em "Mathe C3")
+             " existiert nicht mehr, wurde zu "
+             (em "Mathe C4")))
 
-	(h1 "Vorlesungen aus dem 2. Semester")
-	,(ulist
-	  (link "Parallele und Funktionale Programmierung"
-			"https://chat.whatsapp.com/8GCn4fTWZ0b24aJCOLqnbP")
-	  (link "Grundlagen der Rechnerarchitektur"
-			"https://chat.whatsapp.com/G8wa1sbPw5hAyKB7FqaiP4")
-	  (link "Grundlagen der Schaltungstechnik"
-			"https://chat.whatsapp.com/CLFxwY0QTItGlGhD7gXGlP")
-	  '(span (em "Systemprogrammierung 1")
-			 " existiert nicht mehr, wurde zu "
-			 (em "Systemprogrammierung 2"))
-	  '(span (em "Mathe C2")
-			 " existiert nicht mehr, wurde zu "
-			 (em "Mathe C4")))
+    (h1 "Vorlesungen aus dem 2. Semester")
+    ,(ulist
+      (link "Parallele und Funktionale Programmierung"
+            "https://chat.whatsapp.com/8GCn4fTWZ0b24aJCOLqnbP")
+      (link "Grundlagen der Rechnerarchitektur"
+            "https://chat.whatsapp.com/G8wa1sbPw5hAyKB7FqaiP4")
+      (link "Grundlagen der Schaltungstechnik"
+            "https://chat.whatsapp.com/CLFxwY0QTItGlGhD7gXGlP")
+      '(span (em "Systemprogrammierung 1")
+             " existiert nicht mehr, wurde zu "
+             (em "Systemprogrammierung 2"))
+      '(span (em "Mathe C2")
+             " existiert nicht mehr, wurde zu "
+             (em "Mathe C4")))
 
-	(h1 "Vorlesungen aus dem 1. Semester")
-	,(ulist
-	  (link "Konzeptionelle Modellierung"
-			"https://chat.whatsapp.com/1vgtbFsvEPL8VQhwxS7wgh")
-	  (link "Grundlagen der Technischen Informatik"
-			"https://chat.whatsapp.com/2gGMa0rLJFz4UoUrQbWpRp")
-	  (link "Algorithmen und Datenstrukturen"
-			"https://chat.whatsapp.com/DKtSVJ0cGJW7WllVXkpYOt")
-	  '(span (em "Mathe C1")
-			 " existiert nicht mehr, wurde zu "
-			 (em "Mathe C4")))))
+    (h1 "Vorlesungen aus dem 1. Semester")
+    ,(ulist
+      (link "Konzeptionelle Modellierung"
+            "https://chat.whatsapp.com/1vgtbFsvEPL8VQhwxS7wgh")
+      (link "Grundlagen der Technischen Informatik"
+            "https://chat.whatsapp.com/2gGMa0rLJFz4UoUrQbWpRp")
+      (link "Algorithmen und Datenstrukturen"
+            "https://chat.whatsapp.com/DKtSVJ0cGJW7WllVXkpYOt")
+      '(span (em "Mathe C1")
+             " existiert nicht mehr, wurde zu "
+             (em "Mathe C4")))))
diff --git a/local/theme.scm b/local/theme.scm
index 5bcf41df390f534096604b4372f3a7ee23a4f87d..4d1eab9cde618e573288050883c2d179f1c4cd98 100644
--- a/local/theme.scm
+++ b/local/theme.scm
@@ -11,38 +11,38 @@
 
 (define (intersperse lst x)
   (append (apply append (map (lambda (item) (list item x))
-							 (drop-right lst 1)))
-		  (last-pair lst)))
+                             (drop-right lst 1)))
+          (last-pair lst)))
 
 (define* (make-post-generator #:key site prefix)
   (lambda (post)
-	`(article
-	  ,(post-sxml post)
-	  (nav (span "Beigetragen am "
-				 (time (@ (datetime ,(date->string (post-date post) "~4")))
-					   ,(date->string (post-date post)
-									  "~Y-~m-~d")))
-		   ,@(if (post-ref post 'author)
-				 `((span "Verfasst von " (em ,(post-ref post 'author))))
-				 '())
-		   ,@(if (post-ref post 'tags)
-				 `((span "Tags: "
-						 ,(intersperse
-						   (map (lambda (tag)
-								  (link tag (format #f "/tags/~a.xml" tag)))
-								(post-ref post 'tags))
-						   ", ")))
-				 '())
-		   (span ,@(if (and site prefix)
-					   `(" "
-						 ,(link "Permalink"
-								(format #f "/~a/~a.html"
-										prefix (site-post-slug site post)))
-						 " | ")
-					   '(""))
-				 ,(link "Source"
-						(string-append "https://gitlab.cs.fau.de/faui2k17/posts/blob/master/"
-									   (basename (post-file-name post)))))))))
+    `(article
+      ,(post-sxml post)
+      (nav (span "Beigetragen am "
+                 (time (@ (datetime ,(date->string (post-date post) "~4")))
+                       ,(date->string (post-date post)
+                                      "~Y-~m-~d")))
+           ,@(if (post-ref post 'author)
+                 `((span "Verfasst von " (em ,(post-ref post 'author))))
+                 '())
+           ,@(if (post-ref post 'tags)
+                 `((span "Tags: "
+                         ,(intersperse
+                           (map (lambda (tag)
+                                  (link tag (format #f "/tags/~a.xml" tag)))
+                                (post-ref post 'tags))
+                           ", ")))
+                 '())
+           (span ,@(if (and site prefix)
+                       `(" "
+                         ,(link "Permalink"
+                                (format #f "/~a/~a.html"
+                                        prefix (site-post-slug site post)))
+                         " | ")
+                       '(""))
+                 ,(link "Source"
+                        (string-append "https://gitlab.cs.fau.de/faui2k17/posts/blob/master/"
+                                       (basename (post-file-name post)))))))))
 
 (define local-site-theme
   (theme
@@ -50,40 +50,40 @@
    #:layout
    (lambda (site title body)
      `((doctype "html")
-	   (html (@ (lang "de"))
-		(head
+       (html (@ (lang "de"))
+        (head
          (meta (@ (charset "utf-8")))
-		 (meta (@ (name "referrer") (content "none")))
-		 (meta (@ (name "viewport") (content "width=device-width")))
+         (meta (@ (name "referrer") (content "none")))
+         (meta (@ (name "viewport") (content "width=device-width")))
          (title ,title)
-		 (link (@ (rel "stylesheet") (href "/static/style.css")))
-		 (link (@ (rel "alternate") (type "application/atom+xml") (title "Atom")
-				  (href ,(string-append (site-domain site) "/feed.xml"))))
-		 (link (@ (rel "alternate") (type "application/rss+xml") (title "RSS")
-				  (href ,(string-append (site-domain site) "/rss-feed.xml")))))
-		(body
-		 (header
-		  (nav ,@(list (link '(code "#faui2k17") "/") 
-					   (link "IRC" "/irc.html")
-					   (link "WhatsApp" "/whatsapp.html")
-					   (link "Beitragen" "/meta.html")
-					   (link "Atom" "/feed.xml")
-					   (link "RSS" "/rss-feed.xml"))))
+         (link (@ (rel "stylesheet") (href "/style.css")))
+         (link (@ (rel "alternate") (type "application/atom+xml") (title "Atom")
+                  (href ,(string-append (site-domain site) "/feed.xml"))))
+         (link (@ (rel "alternate") (type "application/rss+xml") (title "RSS")
+                  (href ,(string-append (site-domain site) "/rss-feed.xml")))))
+        (body
+         (header
+          (nav ,@(list (link '(code "#faui2k17") "/") 
+                       (link "IRC" "/irc.html")
+                       (link "WhatsApp" "/whatsapp.html")
+                       (link "Beitragen" "/meta.html")
+                       (link "Atom" "/feed.xml")
+                       (link "RSS" "/rss-feed.xml"))))
          ,body))))
    #:post-template (make-post-generator)
    #:collection-template
    (lambda (site title posts prefix number last?)
-	 (list
+     (list
       (map (make-post-generator #:site site
-								#:prefix prefix)
+                                #:prefix prefix)
            posts)
-	  `(footer
-		,(let ((prev (link (format #f "<< Page ~d" (1- number))
-						   (if (= number 2) "/index.html"
-							   (format #f "/page-~d.html" (1- number)))))
-			   (next (link (format #f "Page ~d >>" (1+ number))
-						   (format #f "/page-~d.html" (1+ number)))))
-		   (cond ((and last? (= number 1)) '())
-				 (last? (list prev))
-				 ((= number 1) (list next))
-				 (else (list prev " | " next)))))))))
+      `(footer
+        ,(let ((prev (link (format #f "<< Page ~d" (1- number))
+                           (if (= number 2) "/index.html"
+                               (format #f "/page-~d.html" (1- number)))))
+               (next (link (format #f "Page ~d >>" (1+ number))
+                           (format #f "/page-~d.html" (1+ number)))))
+           (cond ((and last? (= number 1)) '())
+                 (last? (list prev))
+                 ((= number 1) (list next))
+                 (else (list prev " | " next)))))))))