Merge branch 'hotfix/669'

Close #669
Some type hinting fixes
added Zend\Permissions\Rbac citation
Fixed namespace slashes
Fixed typo
Fixed example according to ZF2 source code
added missing methods
Fixed misspellings
Fixed misspelling add unfinished explanation
Fixed misspelling
element.color - Fixed typo
element.date.time - Removed doubled word
element.number - Fixed validator namespace
element.range - Removed unnecessary ''
Added missing commas
Fixed namespace slashes
Fixed misspelling
Merge pull request #686 from wryck7/fix/zend.form.elements

Fix/zend.form.elements
Merge pull request #685 from wryck7/fix/zend.form.view.helper

Fix/zend.form.view.helper
Merge pull request #684 from wryck7/fix/zend.db

Fix/zend.db