Error correction

Unable to edit a JSonView entry after its value goes null #4

New features

• Hidden property: New hidden property to completely hide the component and only enable it when the Alt h (hidden) keys are pressed.

• Screenshot : Take a screenshot of the full screen with the keys Alt p (print screen), this functionality is added in order to test the application and can take the error and save it

Error correction

Uncaught error in JSonView when an state entry has null as value. #2