removed code used only for old 'message format'
fixed bug in WonMessage content handling
Added a method for finding the subject of the first triple matching a (predicate, object) pattern.
WoN logo links now always to Homepage and additional item in Top Navigation added to view Landing Page, "Get Started" button is not visible when logged in.
'New messages' as directive. Requires testing. Also fixed z-index for bottom bar.
Matches notification is now a custom-directive. Need to generalise it to make it work for the other notification drop-downs as well.
adapted comment facet to new message format, fixed related bugs
Merge branch 'feat-finish-newmessage' into devel
Moved notification dropdown to seperate files (currently only works for matches)
Merge remote-tracking branch 'origin/devel' into devel