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
Add missing include in OptionsResolver README.md
merged branch merk/patch-3 (PR #4765)

Commits
-------

0a43d7d Add missing include in OptionsResolver README.md

Discussion
----------

Add missing include in OptionsResolver README.md

There was a missing interface in the readme.
[Component][HttpKernel] fixed testGetRootDir() on Win
[Form] refactored variable name to be more consistent with rest of the naming
merged branch Inori/refactor-naming (PR #4767)

Commits
-------

819fe34 [Form] refactored variable name to be more consistent with rest of the naming

Discussion
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[Form] Refactored config variable naming to be more consistent

Bug fix: no
Feature addition: no
Backwards compatibility break: no
Symfony2 tests pass: yes

Since `clientTransformer` is renamed to `viewTransformer` everywhere, I think for consistency reasons config variable name should be changed too..

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by stloyd at 2012-07-06T07:31:39Z

Maybe also rename of `normTransformers` to `modelTransformers` ? As this were changed too.

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by Inori at 2012-07-06T07:40:53Z

@stloyd makes sense, done

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by bschussek at 2012-07-06T08:24:43Z

Thanks for the cleanup. Can you squash the commits and prefix the message with "[Form]" please?

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by Inori at 2012-07-06T08:43:49Z

@bschussek done

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by bschussek at 2012-07-06T09:31:04Z

Thanks! @fabpot :+1:
[Form] Compound forms now always need a data mapper. Otherwise an exception is thrown.
[Security] fixed automatic registration of the response listener when creating the listener

This is not a problem with Symfony, but when using the component
standalone (Silex for instance), the context listener might be
instantiated even if the firewall does not need to be fired. In that
case, the handle() method is not called, but the response listener is
called, which means that en empty token is stored in the session.

For Silex, it means that when authenticated, if you visit a 404 page,
you would be disconnected automatically.
[Form] Made data mappers completely responsible for dealing with empty values. Removed duplication of code.
[Form] Fixed FormBuilder to maintain order of its children
Fix typo change String to string
[Form] Clarified how to adapt forms that inherited from FieldType for Symfony 2.1
merged branch Adel-E/patch-1 (PR #4775)

Commits
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dbb63ae Fix typo change String to string

Discussion
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Fix typo change "String" to "string"

Bug fix: no
Feature addition: no
Backwards compatibility break: no
Symfony2 tests pass: yes
Fixes the following tickets: N/A
Todo: N/A
License of the code: MIT
Documentation PR: N/A
merged branch bschussek/issue4715 (PR #4771)

Commits
-------

5fe3f39 [Form] Made data mappers completely responsible for dealing with empty values. Removed duplication of code.
9bf6e8b [Form] Compound forms now always need a data mapper. Otherwise an exception is thrown.

Discussion
----------

[Form] Made requirements for data mappers stricter

Bug fix: no
Feature addition: no
Backwards compatibility break: (yes)
Symfony2 tests pass: yes
Fixes the following tickets: -
Todo: -

This cleanup was done while trying to fix #4715, which is not easily fixable right now. It breaks BC for those people who do not extend `FormType` and manually construct `Form` instances, which hopefully nobody does as it is absolutely *not* recommended at this time.