phpunit: fix problems. Revert change in cb2e2a70: if a record lock exist, another form, with record lock mode=NONE, can't get write access to it. This is what the manual describes.

modifiedRecord.pu: State Diagram
Dirty.php: implement $recordHashMd5 to detect modified records.
OnArray.php: new getMd5()
AbstractBuildForm.php: implemented but not working update of hidden input 'recordHashMd5'. Add hidden input 'recordHashMd5'.
BuildFormBootstrap:  Add hidden input 'recordHashMd5'.
formEditor.sql: Rename 'Dirty.recordModified' to 'Dirty.recordHashMd5'.