Mac: Fix validation for system command mapping
Mac: Fix toolbar tint logic, NSColor.ToCG() extension did not work in certain cases. Refactor to use new core image helpers
Mac: Fix setting MenuItem/ToolItem.ToolTip to null
ToolItem/MenuItem fixes
- Properly order toolbar items when inserted.
- Set enabled properly when created
- Set ToolItem.ID from Command.ID
Code cleanup
Direct2D: Throw exception instead of burying it for Image.GetPixel