Core - Provide BitmapBrush with the currently active surface

UI - Small style change to the confirmation dialog
Surface - Add API to get an ArtemisLed by its corresponding RGB.NET LED
Devices - Add API to get an ArtemisLed by its corresponding RGB.NET LED
Devices - Add API to get an ArtemisLed by its corresponding RGB.NET LedId

src/Artemis.Core/Services/Interfaces/IRgbService.cs

@@ -58,6 +58,7 @@ namespace Artemis.Core.Services
         /// <summary>
         ///     Recalculates the LED group used by the <see cref="BitmapBrush" />
         /// </summary>
-        void UpdateSurfaceLedGroup();
+        /// <param name="artemisSurface"></param>
+        void UpdateSurfaceLedGroup(ArtemisSurface artemisSurface);
     }
 }