fix fileprg collection inputfiltering
fixes zendframework/zf2#4974
Conflicts:
	library/Zend/Mvc/Controller/Plugin/FilePostRedirectGet.php
fix fileprg tests by @2DivisionsByZero, close #5381
Merge pull request #5641 from stefanotorresi/fix/file-prg-collection-inputfiltering

[Hotfix] FilePostRedirectGet plugin and form collections

Conflicts:
	library/Zend/Mvc/Controller/Plugin/FilePostRedirectGet.php
	tests/ZendTest/Mvc/Controller/Plugin/FilePostRedirectGetTest.php
[#5641] CS fixes

- EOF ending
Merge branch 'hotfix/5641'

Close #5641