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