Fixes: 7685. Open FormElement from QFQ error message and save modified record: error about missing {{formId:F}}

FormElement.type=select: fixed problem with dynamic update and mode=readonly - list was still selectable.

Fixes #7620. Label align left/center/right. Defined by config/form/formelement. FormEditor slightly redesigned.

Redesing FormEditor: FormElement as second pill. Hide MultiForm as long as it not active. Rename Various to Layout.

Fixes #7603: Unit test if DatabaseUpdate() plays well. Especially that formEditor.sql is running fine.

Fixes #7594: FE.type=extra: don't name it 'type' or 'id' or 'L' - more detailed error message and an explanation in Manual.rst.