Merge branch 'hotfix/#6773-allow-false-values-in-priority-list'

Close #6773
Close #6768
Close #6820
Close #6834
Close #6881
Merge branch 'typo/#6897-zend-di-docblocktypo-fix'

Close #6897
Performance tweak
#6900 - swapping conditional to avoid eager function call
Merge branch 'feature/#6900-array-utils-performance-tweaks' into develop

Close #6900
Forward port #6900