Added docs about groupsequenceproviders
[fixed] Fixed example code so that custom authentication providers only clear their own tokens
Fix doubled words
New ANSICON link
Merge pull request #2836 from jbafford/typo-fixes

Fix doubled words
Merge pull request #2839 from dosten/ansicon_link

New ANSICON link
fix security context example code
add YAML and XML example for Required and Optional field constraints in a Collection constraint
complete constraint XML examples
fix label
fix cookbook article link since the virtual option doesn't no longer exist
fixing link to the translation domain section in cookbook article
Add missing class
Fixed TwigExtractor API link
Optimisation of Setting Up Permission

Replace www-data by the current user running apache using command line
Clarify php session bridge cookbook.
Merge pull request #2766 from WouterJ/issue_2664

Added docs about GroupSequenceProviders
[#2766] Minor tweaks to group sequence provider, including a few typos and adding the missing interface
Merge pull request #2835 from alcaeus/ticket_8226

[WCM] Fix example code to reflect changes for #8226
Merge pull request #2838 from xabbuh/issue-2837

fix security context example code