This will make sure that we will not encounter a non-existing auth provider.
We will revert to the default db auth provider if the one set in the config
does not exist in our auth provider collection.
PHPBB3-12352
[ticket/12589] Search directly in $directory if it's an absolute sub-path
* Nicofuma/ticket/12589:
[ticket/12589] Add test searching in a non absolute directory
[ticket/12589] Fix tests
[ticket/12589] Search directly in $directory if it's an absolute sub-path
[ticket/12637] Correct file header in coding-guidelines
* bantu/ticket/12637:
[ticket/12637] Fixup all incorrect uses of file header.
[ticket/12637] Correctly escape the file header in coding-guidelines.html.
[ticket/10899] Using Delete All in log viewer with keyword search
* Nicofuma/ticket/10899:
[ticket/10899] Update doc block
[ticket/10899] Use isset($field_value['IN'])
[ticket/10899] Add event core.delete_log
[ticket/10899] Remove trailing ;
[ticket/10899] Fix typo in the class name
[ticket/10899] Add unit tests
[ticket/10899] Get $phpbb_log from the container
[ticket/10899] Remove extra ';'
[ticket/10899] Typo
[ticket/10899] Refactoring in \phpbb\log\log_interface
[ticket/10899] Using Delete All in log viewer with keyword search
[ticket/11942] Delete post/topic reason should be added to logs
* Nicofuma/ticket/11942:
[ticket/11942] Don't change the reason to '' when hard deleting
[ticket/11942] Don't show the checkbox if the post is already soft-deleted
[ticket/11942] Remove useless IF in templates
[ticket/11942] Apply the modifications to subsilver
[ticket/11942] Always display delete reason
[ticket/11942] Edits messages
[ticket/11942] Change the formulation
[ticket/11942] Adding the reason to hard deleted topic/post
[ticket/11942] Delete post/topic reason should be added to logs
[ticket/11467] Add language variables for extension exception messages
* n-aleha/ticket/11467:
[ticket/11467] Add user object to extension manager for tests
[ticket/11467] Add language variables to tests
[ticket/11467] Add language variables for extension exception messages
[ticket/11266] Better message for when composer dependencies are missing...
* bantu/ticket/11266:
[ticket/11266] Better message for when composer dependencies are missing.
[ticket/12597] Command for executing all available cron tasks
* bantu/ticket/12597:
[ticket/12597] Update USE_SYSTEM_CRON_EXPLAIN to be a bit more verbose.
[ticket/12597] Improve language for cron:run command.
[ticket/12597] Do not output anything besides the gif image.
[ticket/12597] Command for executing all available cron tasks
* ptitlazy/ticket/12597: (27 commits)
[ticket/12597] Reformating an acp message
[ticket/12597] Modifiying acp message
[ticket/12597] Fix wrong global variable name
[ticket/12597] Typo correction
[ticket/12597] Typo corrections
[ticket/12597] Changing place of lock release in execute() method
[ticket/12597] Fix test file
[ticket/12597] Typing corrections and improvement of code consistency
[ticket/12597] Fix various mistakes
[ticket/12597] Fix various mistakes
[ticket/12597] Fix visibilty of two functions in run.php
[ticket/12597] Refactoring and test improving
[ticket/12597] Fix language key name
[ticket/12597] Fix coding style and typing mistakes
[ticket/12597] Changes name of command cron:run-all to cron:run.
[ticket/12597] Fix various problems
[ticket/12597] Fix constructor bug and servral doc blocs
[ticket/12597] Modification of return statuses and of test files
[ticket/12597] Fix misplaced release of db lock
[ticket/12597] Change EXECUTE to RUN in language
...
[ticket/12611] Remove phpBB Group copyright notice from .gifs
* Marshalrusty/ticket/12611:
[ticket/12611] Remove phpBB Group copyright notice from .gifs
[ticket/11226] filespec::move_file() should error correctly
* Nicofuma/ticket/11226:
[ticket/11226] Explicity set file_moved to false
[ticket/11226] Add tests
[ticket/11226] Use $user->lang()
[ticket/11226] filespec::move_file() should error correctly
[ticket/11366] Extension's version's check
* Nicofuma/ticket/11366: (29 commits)
[ticket/11366] Fix headings css in list page
[ticket/11366] Add config value in schema_data.sql
[ticket/11366] Fix HTML
[ticket/11366] Exchange links and settings' form
[ticket/11366] Remove the extra {S_FORM_TOKEN}
[ticket/11366] Move the links to the top of the page
[ticket/11366] Hide the version check settings by default
[ticket/11366] Versions, options and actions heading should be centered
[ticket/11366] Better language string for "recheck all"
[ticket/11366] Move "recheck all" link
[ticket/11366] Add $config['extension_force_unstable']
[ticket/11366] Use force_cache on the list page
[ticket/11366] Add recheck-all link
[ticket/11366] Force the use of the cache on the list page
[ticket/11366] Update FILE_NOT_FOUND language string
[ticket/11366] Fix whitespaces
[ticket/11366] Update FILE_NOT_FOUND language string
[ticket/11366] Update var names
[ticket/11366] Align language strings
[ticket/11366] Fix detailed view
...
