Merge branch '2.7' into 2.8

* 2.7:
  [ci] Fix tests requirements
  [ci] SymfonyTestsListener is now auto-registered
  adds validation messages missing italian translations
  [Console] fixed progress bar format on edge cases
  fix bug with set max count, by start method in progress bar

Conflicts:
	src/Symfony/Component/Form/Tests/Extension/Core/EventListener/TrimListenerTest.php
	src/Symfony/Component/HttpKernel/Tests/Profiler/MongoDbProfilerStorageTest.php
	src/Symfony/Component/HttpKernel/Tests/Profiler/SqliteProfilerStorageTest.php
	src/Symfony/Component/Security/Acl/Tests/Dbal/AclProviderTest.php
	src/Symfony/Component/Security/Acl/Tests/Dbal/MutableAclProviderTest.php

Author: nicolas-grekas