received emails are now stored in the database and associated with a student with a matching email address
check if curl is available before attempting to use it
now fetching real email notifications
Merge remote-tracking branch 'origin/devel' into devel
Change course -functionality implemented
implemented email notification links
Edit action - set action handled/not handled (w checkbox)
new email messages can now be marked as read
Merge branch 'devel' of github.com:Meta-arviointi/meta-arviointi into devel
Edit action - select related exercises
fixed bug in LESS
Merge remote-tracking branch 'origin/devel' into devel
Merge branch 'devel'
chat UI
Merge branch 'devel' of github.com:Meta-arviointi/meta-arviointi into devel

Conflicts:
	app/webroot/css/meta.css
implemented chat backend
hide chat window when not logged in, closes #43
fixed js error when not having chat messages in database
fixed header layout bug in firefox
50px treshold for automatic chat window scrolling on refresh