Add 'Address Book' to main top bar menu.
Add 'Mail and Callendar Settings' to profile menu.
Add translation for address book and mail settings.
Fix roundcube layout.

Remove menu header for roundcube.
Fix top positioning for roundcube content.
Modify Roundcube app links to work across Ember apps.

Roundcube's 'addressbook' and 'settings' are now linked from admin app.