Added translations
Added translation support!
tweaked mail page
Added sidebar for mail page
Another small tweak on mail page
Now fills into the mail content when the page is generated
Added translation for mail entries, Added new toggle for sidebar
Rewrite the deletion for mails
Now able to delete multiple mail in one request
Apply the same pattern to removing mails
Fix one bug: when removing all slot in one page,the selectAll checkbox
won't go unchecked
Added mark as read and unread