Merge branch '2.0' into 2.1
added docs on the new security utilities from Symfony 2.2
Update reference/constraints/Image.rst

Seems that annotations do not support trailing commas in parameter lists like PHP arrays do.
[Dependency Injection] small changes
Documentation of the new numerical type handling
Syntax fixes
Removing word added accidentally
Added failure_path param
Replace MinLength with Length
replace maxlength constraints with length equivalents

Conflicts:
	reference/constraints/Collection.rst
max_length can also be guessed from Length
Merge pull request #1854 from richardmiller/removing_apostrophes

Removing a couple of incorrect apostrophes
Added a note about request accept-* headers parsing.
Added information about accept-* headers request methods.
Added link to cookbook article

To clearify the scopes.
Merge branch '2.1'
Merge pull request #1527 from gajdaw/component_finder_path

[Component][Finder] path(), notPath() methods
Fixing small markup issue
Merge branch '2.1'
[#1527] Tweaks to new Finder::path and Finder::notPath docs