Remove 'Take a Screenshot' Functionality

All major operating systems - including Windows, MacOS and just about every flavour of desktop Linux - ship with screen capture tools baked-in. There is no need to add another (buggy) tool that will be difficult to maintain and keep working on all browsers, in all platforms, when the users already have access to better tools in their computer. This will help declutter the Sidebar, and hopefully free the WebBoss developers to focus their time on other, nicer and more important tasks. ;-)