Added default variable to interface for metadata from toArray, fixed issue with SessionArrayStorage to repopulate when session starts fixing request access time
Resolved coding standard issue
Merge branch 'hotfix/3627'

Close #3627
Merge branch 'hotfix/session-metadata-fixes' of git://github.com/mwillbanks/zf2 into hotfix/3639
Merge branch 'hotfix/3639' into develop

Forward port #3639