local/pages.scm: added additional new groups

local/pages.scm

@@ -75,7 +75,11 @@
       (link "Künstliche Intelligenz 1"
             "https://chat.whatsapp.com/KXAYX89fCxzCVT6k0z5Ilc")
       (link "Effiziente kombinatorische Algorithmen"
-            "https://chat.whatsapp.com/D2eTbuuc1Ue6Dk6nC57ZJg"))
+            "https://chat.whatsapp.com/D2eTbuuc1Ue6Dk6nC57ZJg")
+      (link "Computergraphik"
+            "https://chat.whatsapp.com/LaSI7iNHAYTFWLCybnp8Pk")
+      (link "Informationsvisualisierung"
+            "https://chat.whatsapp.com/H9AWOjTkEGM7B5lMUq2Uz3"))
 
     (h2 "Nebenfächer")
     ,(ulist
@@ -88,7 +92,9 @@
       (link "Nichtlineare Optimierung"
             "https://chat.whatsapp.com/JwSB6PUiDNV62Zkr9LufBZ")
       (link "Linear und Kombinatorische Optimierung"
-            "https://chat.whatsapp.com/K1oX32sQgv62kSiNpdgaIY"))
+            "https://chat.whatsapp.com/K1oX32sQgv62kSiNpdgaIY")
+      (link "Betriebswirtschaftslehre"
+            "https://chat.whatsapp.com/JKWhWuos5Rk5DQ0Ypg3FMa"))
 
     (h1 "Veranstaltungen aus dem 4. Semester")
     ,(ulist