[ticket/12043] Sort Extensions by Display Name in ACP Extension mananger

PHPBB3-12043
[ticket/12043] Correct try/catch exceptions for invalid extensions

PHPBB3-12043
[ticket/12043] Fix order of disabled extensions in unit tests

PHPBB3-12043
[ticket/12337] Update jQuery to version 1.11.0

PHPBB3-12337
[ticket/12337] Fix jQuery update migration file

PHPBB3-12337
[ticket/12341] Add tests for get_username_string()

PHPBB3-12341
Merge branch 'ticket/12341' into ticket/12341-ascraeus
[ticket/12341] Update test with new class name and dependencies

PHPBB3-12341
Merge remote-tracking branch 'vsephpbb/ticket/12043' into develop-ascraeus

* vsephpbb/ticket/12043:
  [ticket/12043] Fix order of disabled extensions in unit tests
  [ticket/12043] Correct try/catch exceptions for invalid extensions
  [ticket/12043] Sort Extensions by Display Name in ACP Extension mananger
Merge remote-tracking branch 'Elsensee/ticket/12341' into develop-olympus

* Elsensee/ticket/12341:
  [ticket/12341] Add tests for get_username_string()
Merge remote-tracking branch 'Elsensee/ticket/12341-ascraeus' into develop-ascraeus

* Elsensee/ticket/12341-ascraeus:
  [ticket/12341] Update test with new class name and dependencies
  [ticket/12341] Add tests for get_username_string()
Merge branch 'develop-olympus' into develop-ascraeus

* develop-olympus:
Merge remote-tracking branch 'vsephpbb/ticket/12337' into develop-ascraeus

* vsephpbb/ticket/12337:
  [ticket/12337] Fix jQuery update migration file
  [ticket/12337] Update jQuery to version 1.11.0