Merge pull request #1884 from nickvergessen/ticket/12015-2

[ticket/12015] Fix variable name and event version
Merge pull request #1886 from nickvergessen/ticket/12027

[Ticket/12027] List redis as service in .travis.yml
[ticket/12036] Re-add missing move up button to module management page.

PHPBB3-12036
Merge remote-tracking branch 'prototech/ticket/12036' into develop

* prototech/ticket/12036:
  [ticket/12036] Re-add missing move up button to module management page.