[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/12074] Managing extensions doesn't produce any log entry
* Nicofuma/ticket/12074:
[ticket/12074] Update the visibility of the constructor
[ticket/12074] Don't log errors
[ticket/12074] Managing extensions doesn't produce any log entry