[ticket/10684] Adjust function and parameter name, minor changes.

PHPBB3-10684
[task/travis] Fixing some travis issues

PHPBB3-10718
[task/travis] Rename travis phpunit config files

PHPBB3-10718
[task/travis] Some more small travis fixes

PHPBB3-10718
[task/travis] Dropping support for 5.2 in develop branch

PHPBB3-10718
[task/travis-develop2] Update version from 5.3 to 5.3.2

PHPBB3-10718
Merge remote-tracking branch 'github-unknownbliss/task/travis' into develop-olympus

* github-unknownbliss/task/travis:
  [task/travis] Some more small travis fixes
  [task/travis] Rename travis phpunit config files
  [task/travis] Fixing some travis issues
  [task/travis] Add automated testing to readme
  [task/travis] Removing development information
  [task/travis] Adding Travis Continuous Intergration Support
Merge branch 'develop-olympus' into develop

* develop-olympus:
  [task/travis] Some more small travis fixes
  [task/travis] Rename travis phpunit config files
  [task/travis] Fixing some travis issues
  [task/travis] Add automated testing to readme
  [task/travis] Removing development information
  [task/travis] Adding Travis Continuous Intergration Support
Merge remote-tracking branch 'github-unknownbliss/task/travis-develop2' into develop

* github-unknownbliss/task/travis-develop2:
  [task/travis-develop2] Update version from 5.3 to 5.3.2
  [task/travis] Dropping support for 5.2 in develop branch
[ticket/10719] Revert "Skip functional tests on PHP 5.2"

This reverts commit 9c861a0350ae67f06a38ee6efc890412a32751f4.

PHPBB3-10719
Merge branch 'ticket/unknownbliss/10719' into develop

* ticket/unknownbliss/10719:
  [ticket/10719] Revert "Skip functional tests on PHP 5.2"
[task/travis] Exclude functional and slow tests

PHPBB3-10718
Merge remote-tracking branch 'github-unknownbliss/task/travis' into develop-olympus

* github-unknownbliss/task/travis:
  [task/travis] Exclude functional and slow tests
Merge branch 'develop-olympus' into develop

* develop-olympus:
  [task/travis] Exclude functional and slow tests
[task/travis] Refactor php version check for dbunit install

PHPBB3-10718
Merge remote-tracking branch 'github-unknownbliss/task/travis' into develop-olympus

* github-unknownbliss/task/travis:
  [task/travis] Refactor php version check for dbunit install
Merge branch 'develop-olympus' into develop

* develop-olympus:
  [task/travis] Refactor php version check for dbunit install
Merge remote-tracking branch 'rxu/ticket/10684' into develop-olympus

* rxu/ticket/10684:
  [ticket/10684] Adjust function and parameter name, minor changes.
  [ticket/10684] Rename function phpbb_get_banned_users_ids() parameter
  [ticket/10684] Remove intval mapping for array keys
  [ticket/10684] Adjust pm_notifications() to handle stale bans
  [ticket/10684] Cast user_id to integer
  [ticket/10684] Refactor $sql_ignore_users array update
  [ticket/10684] Remove isset() for $sql_ignore_users update
  [ticket/10684] Fix 2 typos in comment lines.
  [ticket/10684] Send notifications for users with stale bans
Merge branch 'develop-olympus' into develop

* develop-olympus:
  [ticket/10684] Adjust function and parameter name, minor changes.
  [ticket/10684] Rename function phpbb_get_banned_users_ids() parameter
  [ticket/10684] Remove intval mapping for array keys
  [ticket/10684] Adjust pm_notifications() to handle stale bans
  [ticket/10684] Cast user_id to integer
  [ticket/10684] Refactor $sql_ignore_users array update
  [ticket/10684] Remove isset() for $sql_ignore_users update
  [ticket/10684] Fix 2 typos in comment lines.
  [ticket/10684] Send notifications for users with stale bans

Conflicts:
	phpBB/includes/functions_user.php
[ticket/10703] Added a condition to check if ext directory exists

The existence of ext directory is checked, if not present a proper
error message that file doesn't exist is printed out. No Fatal
Error messages.

PHPBB3-10703