Add option toggle in hamburger menu to hide all widgets

[dmcdivitt]

I would like to have a map as clean as possible showing only what I want to show. Please add an option toggle in the menu pane to disable all widgets. That means, if I want to change the layer, I would have to first go to the menu and enable widgets and get the layer widget.

[Korina]

@dmcdivitt Thank you for suggestion, we will consider it.