Need an easy way to prevent screen lock

Similar to how Waze and other apps can prevent a screen lock, Jasonette should support toggling the screen lock of devices.

http://stackoverflow.com/questions/28329185/how-to-prevent-screen-lock-on-my-application-with-swift-and-ios-8

https://developer.apple.com/reference/uikit/uiapplication#1657524

Start by locating Jasonette's native iOS action or configuration entry points and review the linked UIApplication documentation for the screen-lock behavior. Trace how existing app-level toggles are exposed to Jasonette content. Done means an app can enable and disable screen-lock prevention through Jasonette, with coverage for both states.

Written by the indexing model from the issue text.