Merge branch 'security/zf2014-01'

Resolves ZF2014-01 - XXE/XEE vulnerabilities
Merge branch 'releases/2.2.6'

Zend Framework 2.2.6
Disable <label> for input hidden
Test for input hidden
Fix travis
Merge pull request #5931 from ThaDafinser/patch-6

Disable <label> for input hidden

Conflicts:
	library/Zend/Form/View/Helper/FormRow.php
Merge branch 'hotfix/5931' into develop

Close #5931
Fixes #5607