Add failing test case for #116
Send seperate mails and fix message_ids.

Send notification mails per agent, not one with multiple recipients. Also add correct, consistent message_ids to all notification mails, fixes #116.
Remove incorrect In-Reply-To on new ticket mail
Don't send links in emails to users who have never signed in.
Cleanup unused and wrong translations
Prevent agents from removing their own agent permissions. Fixes #126.
Improve login form style with prefix icons
Merge branch 'master' of github.com:ivaldi/brimir
Styling of inbox view
Add correct dependent destroys
add joyride
Make buttons translatable
Merge branch 'master' of https://github.com/ivaldi/brimir

Conflicts:
	app/views/layouts/application.html.erb
	config/locales/en.yml