[Security] Add SimpleForm authentication
[Security] Add simple_token auth method
[Security] Renamed simple_token to simple_http, added support for failure and success handler to both simple firewalls
fixed wrong Logger interface
moved the simple HTTP authenticator to a pre-auth one
[Security] allowed simple pre-auth to be optional if another auth mechanism already authenticated the user
marked some classes as being experimental in 2.3
[HttpFoundation][NamespacedAttributeBag] Refactoring of resolveKey() method
Make getNode function public

The getNode function should be public so that DomElement objects can be accessed directly if need be.
[Console] Added status code to CommandTester and ApplicationTester

Theses classes are already statefull. They contain the input and the
output data. So we can safely add the last status code to the class.
updated version to 2.4
Merge branch '2.3'

* 2.3:
  Added missing column to the form's table layout
  Bumped Icu dependency to RC
  Update validators.ru.xlf
  remove check for PHP bug #50731
  adding missing Farsi translations
  Revert "merged branch armetiz/master (PR #8045)"
[Console] Add clear() to ProgressHelper.

One may want to print something else while the progress bar is running.
The output will be messy if the progress bar is not removed first.

One may also want to remove the progress bar after the work is complete.
[Console] ensure integer exit codes in events
merged branch Tobion/console-event (PR #8038)

This PR was merged into the master branch.

Discussion
----------

[Console] ensure integer exit codes in events

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| License       | MIT

Commits
-------

fe1db71 [Console] ensure integer exit codes in events
Merge branch '2.3'

* 2.3: (37 commits)
  [Console] renamed ConsoleForExceptionEvent into ConsoleExceptionEvent
  Fix several instances of doubled words
  [Security] Fixed the check if an interface exists.
  Added missing slovak translations
  [FrameworkBundle] removed HttpFoundation classes from HttpKernel cache
  [Finder] Fix iteration fails with non-rewindable streams
  [Finder] Fix unexpected duplicate sub path related AppendIterator issue
  [Security] Added tests for the DefaultLogoutSuccessHandler.
  [Security] Added tests for the DefaultAuthenticationSuccessHandler.
  [ClassLoader] tiny refactoring
  [Security] Added tests for the DefaultAuthenticationFailureHandler.
  [Security] Added tests for the remember me ReponseListener.
  [Security] Added tests for the SessionAuthenticationStrategy.
  [Security] Added tests for the AccessMap.
  [FrameworkBundle] removed deprecated method from cache:clear command
  [WebProfiler] remove deprecated verbose option
  fix logger in regards to DebugLoggerInterface
  [Form] [2.3] removed old option
  Added type of return value in VoterInterface.
  [Console] Add namespace support back in to list command
  ...
Merge branch '2.3'

* 2.3:
  ErrorHandler and fixes
  fixed typo in CS translation (closes #8069)
  fix arab translation
  Removed reference to Symfony\Component\Form\Extension\Core\Type\FormType in form.xml
  slovenian validator translations updated
  [FrameworkBundle] set the dispatcher in the console application
  [Console] fix typehint for Application::setDispatcher
  [Finder] Fixed a path in a test.
  [Form] [Validator] Fixed post_max_size = 0 bug (Issue #8065)
[HttpFoundation] Added Request::getEncodings() method
[MonologBridge] added integration with the console component
merged branch Tobion/monolog-console-integration (PR #8167)

This PR was squashed before being merged into the master branch (closes #8167).

Discussion
----------

[MonologBridge] added integration with the console component

This adds integration with the console component by adding ConsoleHandler and ConsoleFormatter which can be used to show log messages in the console output depending on the verbosity settings.
This PR splits the reusable classes from symfony/MonologBundle#42 into the bridge.
It has been reviewed by @Seldaek

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #8033
| License       | MIT
| Doc PR        | will be done when this is used by the MonologBundle

Commits
-------

c0b5996 [MonologBridge] added integration with the console component