put favicons into the right place
configure Mailtrap and add information for it to README
set default from when EMAIL_FROM is not set
use supervisor role not supervisor-team to sent comment notifications
save team in order to set last_checked when commenting
add last_checked to teams-overview
make sure not to send duplicate emails
Improve text-only comment notification
Add link to team site
Add abilities to read activities
Put radio buttons behind CanCan guard

Related to #115 – not closed yet, as the individual items are not yet
protected.
Merge remote-tracking branch 'upstream2/master'

Conflicts:
	spec/models/ability_spec.rb