Spectrum NET

Add a new ToggleControl Panel Button_Click handler that toggles the visibility of a Control Panel element
Fixes UI
Optimisation code behind in MainWindow.xaml.cs

Virustotal
https://www.virustotal.com/gui/file/e3914e9b50bf5af6f29d57a7ec86a92c9b1c10bcd6f8cf76984b2d26014f268e/details