SSL CA File support.
Add Tests.
Allow merging text domains without plural rules
LabelOptionsAwareInterface => LabelAwareInterface

this should not be a BC break because the interface is not included in
any release yet, change only affect develop branch
add disable_html_escape label option support to FormCollection helper
minor code cleaning
fix typo and missing use
Merge branch 'denixport-hotfix/rand-int'
Merge branch 'sslcafile' of https://github.com/icywolfy/zf2 into icywolfy-sslcafile
Merge branch 'icywolfy-sslcafile' into develop
Merge pull request #5908 from DASPRiD/bugfix/text-domain-without-plural-merging

Allow merging text domains without plural rules
[#5908] s/self/static/

- in order to invoke LSB for extensions
Merge branch 'feature/5908' into develop

Close #5908
Merge pull request #5910 from stefanotorresi/improvement/form-labels

minor improvements to form labels
Merge branch 'feature/5910' into develop

Close #5910