Null soport

Error correction

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

New features

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 #2

Error correction

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