Xterm's 256 colors integration for Console. Any corrected inputed hex
color will match to closest Xterm code for matching environment.
cs fix
cs fix
cs fix
useless conditions
added testsuite for xterm256, corrected algorithm for grayscale
preg_match fix mask ommission
cs fix
Merge branch 'xterm256' of git://github.com/H3DAZ/zf2 into feature/3339
[#3339] CS and test cleanup

- Various CS fixes/changes
- Restructured tests to use PHPUnit data providers
Merge branch 'feature/3339' into develop

Close #3339