* 2.7: (40 commits)
[Debug] Fix ClassNotFoundFatalErrorHandler candidates lookups
[2.6][Translator] Extend, refactor and simplify Translator tests.
Update DebugClassLoader.php
inject asset packages in assets helper service
[travis] Do not exclude legacy tests on 2.7
[HttpFoundation] remove getExtension method
[2.6][Translation] fix legacy tests.
[Form] Removed remaining deprecation notices in the test suite
[Form] Moved deprecation notice triggers to file level
[Debug] Map PHP errors to LogLevel::CRITICAL
[Routing][DependencyInjection] Support .yaml extension in YAML loaders
[DX] improve file loader error for router/other resources in bundle
[FrameworkBundle] Initialize translator with the default locale.
[FrameworkBundle] Fix Routing\DelegatingLoader resiliency to fatal errors
[2.7][Translation] remove duplicate code for loading catalogue.
[2.6][Translation] remove duplicate code for loading catalogue.
[HttpKernel] Cleanup ExceptionListener
CS fixes
[DependencyInjection] Show better error when the Yaml component is not installed
[2.3] SCA for Components - reference mismatches
...
* 2.6:
[2.6] Test lowest versions of dependencies
Test lowest versions of dependencies
Fix placeholder date format
Test components using their lowest possible deps