Made GUI.Hud.GetLayer() and Hud.GetLocalLayer() return a layer with one decimal
Added tests for GUI components in the "Tests/GUI Tests.lua" script
Fixed GUI.Toggle.GetText() when the checked/uncheched marks did not contains ':text'
Made GUI.Toggle.Check() force the update of the other radio elements
Made the group being updated after the other elements in GUI.Toggle.Set()
Added tests for GUI.Toggle