Email backup stats

Just like "Sites -> Statistics -> Backup Stats" an overview of all backup settings and their stats, for Email ;)

I actually see this already inplace, but not working properly. Comparing both "menu items" from Email vs Sites:

Email: if($app->auth->get_client_limit($userid, 'backup') != 'n')

Sites: if($app->auth->get_client_limit($userid, 'backup') == 'y')

I'll try to make merge request later this week!

Current code is actually:
Email: if($app->auth->get_client_limit($userid, 'backup') == 'y')
Sites: if($app->auth->get_client_limit($userid, 'backup') != 'n')

EDIT: and the actual problem is that it should be this for mail:
Email: if($app->auth->get_client_limit($userid, 'mail_backup') != 'n')

so add mail_ because it's a mail specific limit, and change it to != 'n' because the admin won't see it if it's == 'y'

added Bug label

changed milestone to %3.2.9

mentioned in merge request !1593 (merged)

assigned to @tim427

mentioned in commit e0467ced

closed with merge request !1593 (merged)

added Fixed label