Store.php: Impelemented Store 'Parent Record'. Extended Store 'Client' with Server SVars. Reorded fucntions. Added createSipAfterFormLoad()

- renamed querySemple() to sql().
- renamed execute() to prepareEXecute()
- ParamArray or prepared Statement will be display on exceptions.
- Testcases extended to ParamArray for sql()

 *.sql: extend definition to test Set and Enum.

Store*.php: Storage Classes unified to one class. Storage is now one array for all stores in class 'Store'