Set up permission level to run JQUERY from webpart

If you plan to use webpart with Jquery u have to use Contribute permissions. If less privileged permissions are used, no information will be displayed.

I discovered that there is no need for whole Contribute permissions level. There is one permission responsible for this - Update Personal Web Parts - Update Web Parts to display personalized information. 

So we can create new permission level (make a copy of Read level) and add this permission.