[Security][Acl] Issue #5787 : Added MutableAclProvider::deleteSecurityIdentity

Code style fix and documentation typo
[FrameworkBundle] made sure that the debug event dispatcher is used everywhere
remove deprecated constraints calls (Min, Max, MaxLength, MinLength)
[Form] Fixed memory leak in FormValidator
[Console] make parent constructor test more reliable

it also fixes the test since f2b60e9c687 and improves phpdoc
[Console] improve regex performance to validate name

using possesive quantifier
Set the font-weight for links to 'normal', to prevent ugly bold links.
[Intl] make currency bundle merge fallback locales when accessing data, allowing use of country-specific locales
[Process] Fix #9343 : revert file handle usage on Windows platform
Fix finder date constraints and tests
fixed typo
[Routing] added working test case for issue #5135
minor #9362 fixed typo (samsonasik)

This PR was merged into the master branch.

Discussion
----------

fixed typo

Commits
-------

98bdb5f fixed typo
Clean up of WebProfiler Controller classes:

Added missing "@throws" PHPdoc comments in controllers
Updated deprecated reference to Symfony\Component\HttpKernel\Debug\ExceptionHandler to use Symfony\Component\Debug\ExceptionHandler instead
minor #9359 Clean up of WebProfiler Controller classes (caponica)

This PR was submitted for the master branch but it was merged into the 2.3 branch instead (closes #9359).

Discussion
----------

Clean up of WebProfiler Controller classes

 - Added missing "@throws" PHPdoc comments in controllers
 - Updated deprecated reference to Symfony\Component\HttpKernel\Debug\ExceptionHandler to use Symfony\Component\Debug\ExceptionHandler instead

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no

Commits
-------

592b831 Clean up of WebProfiler Controller classes:
Fixed English usage for existing users.
git push #9372 Fixed English usage for existing users. (mgenereu)

This PR was submitted for the master branch but it was merged into the 2.2 branch instead (closes #9372).

Discussion
----------

Fixed English usage for existing users.

Commits
-------

b674e44 Fixed English usage for existing users.
[DomCrawler] [HttpFoundation] Make `Content-Type` attributes identification case-insensitive
bug #9354 [2.2][Process] Fix #9343 : revert file handle usage on Windows platform (romainneutron)

This PR was merged into the 2.2 branch.

Discussion
----------

[2.2][Process] Fix #9343 : revert file handle usage on Windows platform

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #9343
| License       | MIT

Hello,

I propose to revert the use of file handles only for `STDOUT` on Windows platform (see implementation in 2.2.6 [here](https://github.com/symfony/symfony/blob/4059720232e8c4acce6ca31627b87b904cf1aa77/src/Symfony/Component/Process/Process.php#L231-L242)).

When I decoupled pipes management from `Process` in #8924, I used file handles for both `STDOUT` and `STDERR`. This was an error as it introduced random failure in reading the handles (reported as [PHP#65650](https://bugs.php.net/bug.php?id=65650)).

Reverting to the previous implementation solves the issue. My apologies for the issues it introduced.

Versions that have been affected by the bug are 2.2.7, 2.2.8, 2.2.9, 2.3.4, 2.3.5 and 2.3.6.

Side note : I thought about testing the file handles implementation on *nix, but it fails most of the time where as Windows is okay. Unit testing on windows is okay (AbstractProcessTest::testProcessPipes tests it), but I don't provide a travis compatible test.

Commits
-------

e9dd408 [Process] Fix #9343 : revert file handle usage on Windows platform
Merge branch '2.2' into 2.3

* 2.2:
  Fixed English usage for existing users.
  [Process] Fix #9343 : revert file handle usage on Windows platform