add missing parts to controller and view

app/controllers/events_controller.rb

@@ -354,8 +354,16 @@ class EventsController < ApplicationController
         @prefiltered_events = @conference.events.keynotes
       when 'plenary_sessions'
         @prefiltered_events = @conference.events.plenary_sessions
-      when 'highlights'
-        @prefiltered_events = @conference.events.highlights
+      when 'special_sessions'
+        @prefiltered_events = @conference.events.special_sessions
+      when 'lunchs'
+        @prefiltered_events = @conference.events.lunchs
+      when 'parties'
+        @prefiltered_events = @conference.events.parties
+      when 'demonstrations'
+        @prefiltered_events = @conference.events.demonstrations
+      when 'fikas'
+        @prefiltered_events = @conference.events.fikas
       else
         @prefiltered_events = @conference.events
     end

app/views/home/index.html.haml

@@ -64,7 +64,13 @@
           |
           = link_to "Individual Papers", "#", :id => "events_individual_papers_only"
           |
-          = link_to "Partys", "#", :id => "events_Partys_only"
+          = link_to "Lunchs", "#", :id => "events_lunchs_only"
+          |
+          = link_to "Parties", "#", :id => "events_parties_only"
+          |
+          = link_to "Demonstrations", "#", :id => "events_demonstrations_only"
+          |
+          = link_to "Fikas", "#", :id => "events_fikas_only"
           |
           = link_to "Poster Presentations", "#", :id => "events_poster_presentations_only"
           |