Merge branch 'f9805-optionalJump' into 'master'

.gitlab-ci.yml

Documentation/Manual.rst

extension/Classes/Controller/QfqController.php

extension/Classes/Core/AbstractBuildForm.php

extension/Classes/Core/Constants.php

extension/Classes/Core/Database/Database.php

extension/Classes/Core/QuickFormQuery.php

extension/Classes/Core/Save.php

extension/Classes/Sql/formEditor.sql

javascript/src/QfqForm.js

less/qfq-bs.css.less

mockup/error.html