[Web] Fix log line handling

[Web] Add mailcow UI logs
[Web] Changes to _SESSION['return'] logic and logger (more to come)
[Web] Show last login
[Web, Postfix] Allow to disable sender check completely
[Web] Many minor fixes
[Web] Update some libs

data/web/css/mailbox.css

@@ -44,4 +44,4 @@ table.footable>tbody>tr.footable-empty>td {
 #logText {
   font-family:Consolas,Monaco,Lucida Console,Liberation Mono,DejaVu Sans Mono,Bitstream Vera Sans Mono,Courier New, monospace;
   font-size:smaller;
-}
+}