Tried to clarify #3255
Rewording security sections to be even more clear that secure_channel and ip don't actually *restrict* access
Merge pull request #3256 from WouterJ/clarify_checking

[#3255] Tried to clarify how to check a box
changed version from 2.3.0 --> 2.3.7

just for convenience (i.e. people not reading the text carefully but copying the example and starting with an "old" Symfony version)
[#3252] Simplifying version constraint by using a wildcard
fixes #3267

Make sure we use camelCase for action arguments
Merge pull request #3268 from greg0ire/argument_naming_consistency

fixes #3267
Merge pull request #3259 from symfony/security-access-control

Security access_control reword
Merge branch '2.2' into 2.3

Conflicts:
	book/security.rst
Merge branch '2.3' into 2.4