Merge branch 'master' into readOnly

CHANGELOG.md

doc/NewVersion.md

doc/REST.md

doc/T3_DOC.md

extension/Documentation/Manual.rst

extension/Documentation/Release.rst

extension/Documentation/Settings.cfg

extension/Documentation/_make/conf.py

extension/RELEASE.txt

extension/Source/api/rest.php

extension/Source/core/AbstractBuildForm.php

extension/Source/core/Constants.php

extension/Source/core/QuickFormQuery.php

extension/Source/core/Save.php

extension/Source/core/database/DatabaseUpdateData.php

extension/Source/core/exceptions/AbstractException.php

extension/Source/core/exceptions/CodeException.php

extension/Source/core/exceptions/DbException.php

extension/Source/core/exceptions/DownloadException.php

extension/Source/core/exceptions/ShellException.php