0.8.7: * Field Definition: - Add Boolean field type, which is displayed as a checkbox. - Default values can be the result of python calculations. - Default values are validated according to the field type. * Pressing cancel on the initial dialog closes the application. * Details view: - Corrected widget layout problems. - Do not lose the layout groups after a while. - Fix crash when changing user level, with related records. (Murray Cumming) * Added Albanian translation. (Laurent Dhima)