[ticket/11970] Add set -x to Travis setup scripts.

Output is hidden by Travis by default and this will allow easier debugging.

PHPBB3-11970
[ticket/11970] Make apt-get less quiet.

PHPBB3-11970
Merge remote-tracking branch 'github-bantu/ticket/11970' into develop-olympus

* github-bantu/ticket/11970:
  [ticket/11970] Make apt-get less quiet.
  [ticket/11970] Add set -x to Travis setup scripts.
[ticket/11814] Remove redundant text from the topic reply email notification.

PHPBB3-11814
Merge remote-tracking branch 'prototech/ticket/11814' into develop-olympus

* prototech/ticket/11814:
  [ticket/11814] Remove redundant text from the topic reply email notification.
[ticket/12037] Fix hard-coded text in acp_inactive.html.

PHPBB3-12037
Merge remote-tracking branch 'prototech/ticket/12037' into develop-olympus

* prototech/ticket/12037:
  [ticket/12037] Fix hard-coded text in acp_inactive.html.
[ticket/11699] Exclude build/new_version and build/old_versions from lint.

PHPBB3-11699
[ticket/12046] Use PHP_BINARY environment variable in PHP lint test.

PHPBB3-12046
[ticket/11699] Properly exclude the .git directory. Namely missing dot prefix.

PHPBB3-11699
[ticket/11699] Also exclude the phpBB/cache directory.

PHPBB3-11699
[ticket/12048] Fix the regexp for language keys in custom bbcodes.

PHPBB3-12048
Merge remote-tracking branch 'prototech/ticket/12048' into develop-olympus

* prototech/ticket/12048:
  [ticket/12048] Fix the regexp for language keys in custom bbcodes.
Merge remote-tracking branch 'bantu/ticket/11699' into develop-olympus

* bantu/ticket/11699:
  [ticket/11699] Also exclude the phpBB/cache directory.
  [ticket/11699] Properly exclude the .git directory. Namely missing dot prefix.
  [ticket/11699] Exclude build/new_version and build/old_versions from lint.
[ticket/12056] Fix failure due to "Creating default object from empty value".

PHPBB3-12056
Merge remote-tracking branch 'bantu/ticket/12056' into develop-olympus

* bantu/ticket/12056:
  [ticket/12056] Fix failure due to "Creating default object from empty value".
[ticket/12061] Fix keyboard shortcut in firefox

PHPBB3-12061
Merge remote-tracking branch 'Elsensee/ticket/12061' into develop-olympus

* Elsensee/ticket/12061:
  [ticket/12061] Fix keyboard shortcut in firefox
[ticket/10023] Make password change notification more noticeable

PHPBB3-10023
Merge remote-tracking branch 'Elsensee/ticket/10023' into develop-olympus

* Elsensee/ticket/10023:
  [ticket/10023] Make password change notification more noticeable