make style more cozy like
add fonts
improve edit box styling
make style more cozy like
add fonts
improve edit box styling
improve box edition ui
improve design
improve mail styling
improve mail style: background + attachment box
debuglayout
mark import as failed when credentials are wrong
add no mailbox message when there is no mailbox created
add confirm dialog before deleting a mailbox
route fetch-new returns json response instead of plain text
debug new message retrieval
better error handling
Merge branch 'feature/design' of github.com:mycozycloud/cozy-mails into feature/design

Conflicts:
	client/app/styles/main.styl
	client/public/stylesheets/app.css
simplify menu, add nice scroll bar and don't render each view each time

they are displayed
put add mailbox button back