[Web] Fixes for BCC map input fields

[Web] Allow to edit alias address
[Web] $_SESSION['return'] now contains arrays and allows multiple returned messages and log entries
[Web] Some language string changes
[Web] General SQL exception handler, remove all try catch handlers
[Web] Alias table now has an ID as primary key
[Web] Be more aggressive with localStorage cleaning

data/web/admin.php

@@ -261,7 +261,7 @@ $tfa_data = get_tfa();
             else {
             ?>
             <div class="row">
-              <div class="col-md-1"><input type="checkbox" data-id="dkim" name="multi_select" value="<?=$domain;?>" disabled /></div>
+              <div class="col-md-1"><input type="checkbox" data-id="dkim" name="multi_select" value="<?=$alias_domain;?>" disabled /></div>
               <div class="col-md-2 col-md-offset-1">
                 <p><small>↳ Alias-Domain: <strong><?=htmlspecialchars($alias_domain);?></strong><br /></small><span class="label label-danger"><?=$lang['admin']['dkim_key_missing'];?></span></p>
               </div>