Do not show plug-in configurations if the logged in user lacks USE permission
The current "Run plugin" dialog include plug-ins and configurations that the logged in user only have READ access to. Selecting that option and clicking "Next" result in 'Permission denied' error message.
This can probably be fixed in
ContextUtil.checkContext() method if a check for USE permission is included. But first check for places that are calling this method so that excluding READ-only plug-ins doesn't create a side-effect.