Added wiki-page search for 5-2-stable, Fixed issue #4310

Created by: coverer

Since the master travis-ci build failed somehow, I applied the patch to a clean 5-2-stable and it works on our production machine.

You can now search for content in wiki pages. It gives the page, but not a snippet of the page, that may be a nice improvement for the future.

app/assets/javascripts/dashboard.js.coffee

@@ -27,7 +27,7 @@ class Dashboard
     else
       event_filters.splice index, 1
-    $.cookie "event_filter", event_filters.join(",")
+    $.cookie "event_filter", event_filters.join(","), { path: '/' }
   initSidebarTab: ->
     key = "dashboard_sidebar_filter"