Added Address model
Added many to many client-address relation
Added cascade deletion
Completed address class
added client address insert method
Extended insert_test method with debug option
Fixed developer interface path access
Quit button quits application.
connected gtk_main_quit signal with self.quit method
added random_address method
Added all method for db_manager to use address
Added menuitems and functions for new and delete client
Added some address TDD tests
Added address notebook to client_view.glade file
minor warnning
Split db_manager into db_<client/address>_manager
Fixed Address representation
added get_all_address and address_exist method to manage address
Added insert_address method
delete address method added