Add lang to settings
Select mailboxes displayed
Update display of favorites selection
Save plugins active state inside settings
Use Source Sans Pro font to display message
Fix display of attachments
Merge branch 'master' of https://github.com/aenario/cozy-emails
Validate account
Misc fixes
Use moment with locales (l18n for dates)
report box comparison errors
Better management of IMAP and SMTP ports and options
Minor fixes in account config
[Style] flags display in message list
[Front] Allow to hide all alerts
Merge remote-tracking branch 'brice/master'

Conflicts:
	client/app/components/account-config.coffee
	client/app/components/toast.coffee
	client/app/utils/socketio_utils.coffee
	server/models/account.coffee
fix frank's errors 4 & 5
built