Merge branch 'hotfix/#1282-zend-form-url-helper-example'

Close #1282
Merge branch 'hotfix/#1283-#998-todo-fixes-in-form-view-helpers'

Close #1283
Fix headlines in Zend\Code\Generator chapter
Merge branch 'hotfix/#1285-zend-code-generator-headlines' into develop

Close #1285
Forward Port #1285