CON-1130 | Optimizely loading from our CDN - frontend
CON-1130 | added MysqlKeyValueModel to store Optimizely script
CON-1130 | added Cron maintnance script
CON-1130 | set up controller; added flag to DefaultSettings.php; minor fixes;
CON-1130 | removed ETag fetching, whole contents are compared
CON-1130 | minor change
CON-1130 | Optimizely from our CDN error handling
CON-1130 | URL check if already starts with 'http:'
CON-1130 | using Http::get() instead of curl explicitly
CON-1130 | simpler cheking of url prefix
CON-1130 | Magic numbers
Merge branch 'CON-1130' of github.com:Wikia/app into CON-1130
CON-1130 | changes after CR
CON-1130 | changes after CR, mostly spaces
CON-1130 | Http::get() doesn't actually need 'html:' prefix; added a quite important '\!' and not so important space;
CON-1130 | values in the DB are trimmed, so are the dowlnoaded now
Merge remote-tracking branch 'origin/dev' into CON-1130

Conflicts:
	extensions/wikia/Optimizely/Optimizely.class.php
CON-1130 | overwriting cache in stead of purging it on set()
CON-1130 | fix for overwriting cache on set()
CON-1130 | cache fix for set()