Grammar and syntax cleanup
Add comment on http_digest auth. 

I just thought it would be usefull to see what keys are needed to get HTTP Digest Auth working.
Update reference/configuration/security.rst

add empty line
Changed hostname to host
Fixed typo, thanks to @stof
Added use statements
Fixed output escaping issues
Update reference/configuration/security.rst

Added PHP and XML examples.
Update reference/configuration/security.rst

Formatting fixes, added file comments.
Update reference/configuration/security.rst

fix newline
Merge pull request #2159 from fabpot/missing-reference

added a missing reference to the proxy route
Notes on incorrect usage of the entity generator
Merge pull request #2165 from WouterJ/update_routing_22

[2.2] Updated most routing changes
[#2165] Filling in a few more changes of pattern -> path
Merge pull request #2174 from WouterJ/patch-7

Fixed output escaping issues
Merge branch 'added-request-usage' of github.com:dlsniper/symfony-docs into dlsniper-added-request-usage

Conflicts:
	book/controller.rst
	book/http_fundamentals.rst
Merge remote-tracking branch 'origin/2.0' into 2.0
Added missing colon to yaml config

Missing : on the end of the first entry in the yaml config
Added 2 commonly-used standards
Moved yaml to his own map