It is now possible to ignore threads.
Updated font awesome to new version
Added new file for ignoring threads
The "ignore" feature can be disabled and enabled, the value will now be retrieved.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	boot.php
	update.php
Removed the obsolete update functions
Enhance the database structure checks when they failed.
Merge pull request #1095 from annando/master

Ignore notifications (feature request #847) - database structure update should work now