Merge pull request #2250 from greg0ire/doc_improvements

Doc improvements
[ADD] Trad
Merge pull request #2253 from Th3Mouk/master

[ADD] Trad
Improved code coverage of Filter class. Minor CS issues fixed.
Merge pull request #2254 from pulzarraider/filter_test

Improved code coverage of Filter class. Minor CS issues fixed.
Improved CRUDController tests (added CSRF token tests, improved isGranted test in createAction). Improved doc blocks in CRUDController
Merge pull request #2257 from pulzarraider/controller_csrf_test

Improved CRUDController tests and doc blocks
fix typo
fix it's <=> its confusion
format code nicely, avoid horizontal scrolling
add missing article
avoid long lines
add some punctuation
use inline literals for variables
whitespace
add missing plural mark
avoid long lines