[ticket/11094] Add textbox for jabber while memberlist search

PHPBB3-11094
Merge remote-tracking branch 'dhruvgoel92/ticket/11094' into develop-olympus

* dhruvgoel92/ticket/11094:
  [ticket/11094] Add textbox for jabber while memberlist search
Merge remote-tracking branch 'bantu/ticket/11604' into develop-olympus