Reorganized managed asset browser context menus * First option is the left click option to mimic OS context menu * Removed duplicate "open folder in OS explorer" options for folder, and renamed them to be explicit. * Hide `Navigate to Folder` when its not available * Use an event to populate common/shared folder context menu items * Added `Recompile all assets` to 'this' folder right click Implement event system Priority Makes asset browser context menus correctly laid out