[Web] Reset last_run for imapsync jobs to run next, other minor changes...

data/web/lang/lang.en.php

@@ -271,7 +271,10 @@ $lang['mailbox']['deactivate'] = 'Deactivate';
 $lang['mailbox']['owner'] = 'Owner';
 $lang['mailbox']['mins_interval'] = 'Interval (min)';
 $lang['mailbox']['last_run'] = 'Last run';
-
+$lang['mailbox']['last_run_reset'] = 'Schedule next';
+$lang['mailbox']['sieve_info'] = 'You can store multiple filters per user, but only one prefilter and one postfilter can be active at the same time.<br>
+Each filter will be processed in the described order. Neither a failed script nor an issued "keep;" will stop processing of further scripts.<br>
+Prefilter → User scripts → Postfilter → <a href="https://github.com/mailcow/mailcow-dockerized/blob/master/data/conf/dovecot/sieve_after" target="_blank">global sieve postfilter</a>';
 $lang['info']['no_action'] = 'No action applicable';
 
 $lang['delete']['title'] = 'Remove object';