removed community ticker from core
removed sql
removed community ticker from campcontext
changes
changed event dispatch
System preferences service
system pref controller update
improvements
optimalization - caching
system pref class replacing
system pref changes
merge
fix
mailchimp api service fix
Merge pull request #430 from takeit/system_preferences

New System preferences as an service
Fix offset checking.
Merge pull request #429 from takeit/removed_ticker

Removed community ticker from core
Merge branch 'master' of github.com:sourcefabric/Newscoop into v4.3

Conflicts:
	newscoop/classes/SystemPref.php
	newscoop/template_engine/classes/CampContext.php