Added test Min/Max validators should ignore empty string

Refs #3686
Min/Max Validators ignore empty string

Fixes #3686
Tests for PluralizationRules.
[TwigBundle] added support for custom loader paths

Before this commit, there was no ability to specify custom
search paths for Twig loader. Lets say we have twig templates
outside bundles directories (parts of the domain logic, not
application) - we want to be able to load them.

This commit adds `loader_paths` parameter to twig config,
which is used to set custom paths to the loader.
updated vendors
fixed incorrect reference to set*Service() method
[Component][Finder][SplFileInfo] file_get_contents=>fpassthru
Ensure there is a session before getting the session id
[Security] Move default authentication success handling strategy to seperate class
[Security] Update configuration for changes regarding default success handler
[Security] Fix + add AbstractFactory test
[Security] Move default authentication failure handling strategy to seperate class
[Security] Update configuration for changes regarding default failure handler
[Security] Fixes + add AbstractFactory test for failure handler
[Security] Update AuthenticationFailureHandlerInterface docblock. Never return null
[Security] Add note to CHANGELOG about refactored authentication failure/success handling
[Security] Various CS + doc fixes
[Security] Exception when authentication failure/success handlers do not return a response
[Security] Add authors + fix docblock
[Security] Fix regression after rebase. Target url should be firewall dependent
fix another '0' problem
[Locale] fixed bug on the parsing of TYPE_INT64 integers in 32 bit and 64 bit environments, caused by PHP bug fix :) (closes #4718)
merged branch eriksencosta/issue-4718 (PR #4794)

Commits
-------

28f002d [Locale] fixed bug on the parsing of TYPE_INT64 integers in 32 bit and 64 bit environments, caused by PHP bug fix :) (closes #4718)

Discussion
----------

[Locale] fixed bug on the parsing of TYPE_INT64 integers in 32 bit and 64 bit environments, caused by PHP bug fix

Bug fix: yes
Feature addition: no
Backwards compatibility break: no
Symfony2 tests pass: yes
Fixes the following tickets: #4718
License of the code: MIT

[![Build Status](https://secure.travis-ci.org/eriksencosta/symfony.png?branch=issue-4718)](http://travis-ci.org/eriksencosta/symfony)

Tests pass on PHP 5.3.3, 5.3.14 and 5.4.4 with ICU 4.2, 4.4 and 4.6 on 32 and 64 bit environments.
merged branch Tobion/patch-1 (PR #4790)

Commits
-------

413e0ae fix another '0' problem

Discussion
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[HttpFoundation] fix another '0' problem
merged 2.0
Issue #4719 - (Redis and Memcached fixes and test)
merged branch gajdaw/issue_4719_appendix (PR #4795)

Commits
-------

d1a142e Issue #4719 - (Redis and Memcached fixes and test)

Discussion
----------

Issue #4719 - (Redis and Memcached fixes and test)

Bug fix: yes
Feature addition: no
Backwards compatibility break: no
Symfony2 tests pass: [![Build Status](https://secure.travis-ci.org/gajdaw/symfony.png?branch=issue_4719_appendix)](http://travis-ci.org/gajdaw/symfony)
Fixes the following tickets: 4719
Todo:
License of the code: MIT
Documentation PR: -

The same problem concerns `RedisProfilerStorage` and `BaseMemcacheProfilerStorage`.
Solution is similar.