user settings control

User settings control (CUserOption class). Settings are saved based on the following principle:

• Changes are saved and accumulated in cookie.
• If during 5 seconds period, the page wasn't reloaded, the data is sent by AJAX to a special handler that saves it on the server.
• Otherwise, at the first hit, data changes, that are recorded in the cookie and saved by the handler, are transferred to server.

As a result, client application can read a settings save as immediate and not requiring control.

Method	Description	Available from version
BX.userOptions.save	Saves the user setting values.
BX.userOptions.del	Deletes the user setting values.