[ticket/12672] Make tab intercept; CB for keypress only react without key mods

Changed the callback of keypress inside the <textarea> for the posting
such that, if key 9 is pressed (tab character) and ctrl, shift, alt and meta
are not pressed the tab is placed. Otherwise, nothing is made and default is
not prevented.

PHPBB3-12672
[ticket/12675] Fix code sniffer complaints introduced by recent commits

PHPBB3-12675
Merge pull request #2561 from marc1706/ticket/12675

[ticket/12675] Fix code sniffer complaints introduced by recent commits

* marc1706/ticket/12675:
  [ticket/12675] Fix code sniffer complaints introduced by recent commits
Merge pull request #2556 from brunoais/ticket/12672

[ticket/12672] Make tab intercept; CB for keypress only react without key mods

* brunoais/ticket/12672:
  [ticket/12672] Make tab intercept; CB for keypress only react without key mods
[ticket/12660] Improve check for when phpinfo() is disabled.

PHPBB3-12660
Merge pull request #2548 from bantu/ticket/12660

[ticket/12660] Improve check for when phpinfo() is disabled.
Merge branch 'develop-olympus' into develop-ascraeus

# By Andreas Fischer
# Via Andreas Fischer (1) and Dhruv Goel (1)
* develop-olympus:
  [ticket/12660] Improve check for when phpinfo() is disabled.
[ticket/12559] Add forum setting to limit subforum legend

Squashed all commits, they were basically just typos and errors

PHPBB3-12559
[ticket/12559] Applied DeMorgan and removed unnecessary true:false

PHPBB3-12559
[ticket/12334] Add PROFILE_FIELD_VALUEID template var

PHPBB3-12334
[ticket/12334] Added field_novalue fall-back as requested

PHPBB3-12334
[ticket/12334] Implemented get_profile_valueid method

PHPBB3-12334
[ticket/12334] Changed from valueid to value_raw

PHPBB3-12334
[ticket/12334] Added test get_profile_value_raw

PHPBB3-12334
[ticket/12334] Dropdowns cannot be tested this way

PHPBB3-12334
[ticket/12334] Removed tests

Will be implemented in #2459

PHPBB3-12334
[ticket/12408] Add quick setting for "default guest style" to ACP

PHPBB3-12408
[ticket/12408] Simplified queries

PHPBB3-12408
[ticket/12408] Code cleanup

Rebased to see if travis will finally play along

PHPBB3-12408
[ticket/12408] Public functions and updated doc block

PHPBB3-12408