[ticket/12160] Add function to check if phpBB is installed.

PHPBB3-12160
[ticket/12160] Check if phpBB is installed before creating phpBB container.

PHPBB3-12160
[ticket/12160] Move phpbb_check_installation_exists() to functions_install.php

PHPBB3-12160
[ticket/12160] Use phpbb_check_installation_exists() in the other modules.

PHPBB3-12160
[ticket/11239] Including username before Overview title

Adding username to the page title to avoid confusion while managing
multiple users in ACP

PHPBB3-11239
[ticket/12274] Load correct T_TEMPLATE_PATH during update

PHPBB3-12274
[ticket/11239] Removing hard-coded, language specific possessive

PHPBB3-11239
[ticket/12274] Fix broke/missing jQuery asset paths in update script

PHPBB3-12274
[ticket/12274] Add core.js to the install footer

Required so phpbb var is defined, as it is used in admin.js.

PHPBB3-12274
Merge remote-tracking branch 'vsephpbb/ticket/12274' into develop

* vsephpbb/ticket/12274:
  [ticket/12274] Add core.js to the install footer
  [ticket/12274] Fix broke/missing jQuery asset paths in update script
  [ticket/12274] Load correct T_TEMPLATE_PATH during update
Merge branch 'ticket/11239' of github.com:geetakshi/phpbb into develop

# By geetakshi
# Via geetakshi
* 'ticket/11239' of github.com:geetakshi/phpbb:
  [ticket/11239] Removing hard-coded, language specific possessive
  [ticket/11239] Including username before Overview title
[ticket/7580] Add test for IF {VAR} is defined in templates

http://tracker.phpbb.com/browse/PHPBB3-7580
This test demonstrates that is possible to test if a
variable exists and then use it if it does, similar to
using isset(), but in template/twig syntax.
<!— IF {VAR} is defined —>{VAR}<!— ENDIF —>

PHPBB3-7580
[ticket/12269] Delete folder mods in language

Deleted mods folder in phpbb/language/en/.

PHPBB3-12269
Merge branch 'ticket/12269' of github.com:netdeamon/phpbb into develop

# By netdeamon
# Via netdeamon
* 'ticket/12269' of github.com:netdeamon/phpbb:
  [ticket/12269] Delete folder mods in language
[ticket/9040] Count HTML entities as single in custom profile fields

Currently when an user adds a HTML entity to a custom profile field, the length
gets incremented by 4 since the code reads &gt; instead of <. However, the
length is presentational and not DB storage so it should be treated as a
single character even if it takes four lengths in the DB by being stored as
a HTML entity.

Work around this by decoding html entities before counting. Also, added unit
tests for string field type

PHPBB3-9040
[ticket/9040] Minor cleanup in the unit test file

PHPBB3-9040
Merge remote-tracking branch 'dragooon/ticket/9040' into develop

* dragooon/ticket/9040:
  [ticket/9040] Minor cleanup in the unit test file
  [ticket/9040] Count HTML entities as single in custom profile fields
[ticket/12279] Add memberlist_view.html template event to add custom info

Template event to ddd custom content
to the user profile view after the main content.

PHPBB3-12279
Merge remote-tracking branch 'vsephpbb/ticket/7580' into develop

* vsephpbb/ticket/7580:
  [ticket/7580] Add test for IF {VAR} is defined in templates
Merge remote-tracking branch 'rxu3/ticket/12279' into develop

* rxu3/ticket/12279:
  [ticket/12279] Add memberlist_view.html template event to add custom info