[ticket/12146] Added a missing # to inline css-style of <span>

PHPBB3-12146
Merge remote-tracking branch 'Crizz0/ticket/12146' into develop-olympus

* Crizz0/ticket/12146:
  [ticket/12146] Added a missing # to inline css-style of <span>
Merge remote-tracking branch 'github-bantu/ticket/11509' into develop-olympus

* github-bantu/ticket/11509:
  [ticket/11509] Fail on Travis CI if commit messages are improperly formatted.
[ticket/11509] Contrary to docs, COMMIT_RANGE is not available in PR mode.

PHPBB3-11509
[ticket/11509] Run commit message checker only in one environment.

PHPBB3-11509