Added exception handling with traceback for objects_from_query
Data provider setattr now returns changed value according to the model.
Database structure changed according to recent requirements.

+ views now change dates to make them more readable.
Editor.edit now returns changed value from data provider.
Changed models to conform to requirements from 10.04.2013.

+ Added GosNom field to Events and EventsView.
+ Implemented virtual field with date change for Card.DTReg and Card.DTEnd.
Db Update.
Processing message made more recognizable.
Web-interface rework.

+ LStatus, Config, Users, Terminals moved to new Options tab.
+ Improved Card table column sizes.
Timepicker now allows any value in hour or minute select inputs.
Fixed web-interface behaviour in user mode in conformance with recent changes.