Merge branch 'develop' into feature/dic

* develop: (441 commits)
  [feature/new-tz-handling] Don't use global user but make it a parameter
  [feature/new-tz-handling] Fix size of suggestion button in chrome
  [feature/new-tz-handling] Fall back to UTC, if the timezone is invalid
  [feature/new-tz-handling] Add previous selected value to validation if valid
  [feature/new-tz-handling] Display suggestion when a different value is selected
  [ticket/10998] Add border-radius to forum rules block - prosilver
  [feature/new-tz-handling] Remove additional marking of selected items
  [feature/new-tz-handling] Move update helper function to new class
  [feature/new-tz-handling] Fix unit test
  [feature/new-tz-handling] Delete old variable which is not used anymore
  [feature/new-tz-handling] Rename $user->tz back to $user->timezone
  [feature/pagination-as-list] New parameter for name of start var
  [feature/pagination-as-list] Updates for nils comments
  [feature/pagination-as-list] Rename and deprecate functions
  [feature/pagination-as-list] Various fixes and improvements
  [ticket/10968] Render pagination within the template
  [feature/new-tz-handling] Remove "timezone might be numeric"
  [feature/new-tz-handling] Add function to update the timezone
  [feature/new-tz-handling] Correctly update user and board timezones on update
  [ticket/10996] Use correct DBMS name in Travis config for PostgreSQL
  ...

Conflicts:
	phpBB/common.php
	phpBB/composer.json
	phpBB/composer.lock
	tests/cron/task_provider_test.php

phpBB/common.php

@@ -124,7 +124,7 @@ $phpbb_extension_manager = $phpbb_container->get('ext.manager');
 $phpbb_subscriber_loader = $phpbb_container->get('event.subscriber_loader');
 
 $template = $phpbb_container->get('template');
-$style = $phpbb_container->get('style');
+$phpbb_style = $phpbb_container->get('style');
 
 // Add own hook handler
 require($phpbb_root_path . 'includes/hooks/index.' . $phpEx);