Bed and Axes classes moved from GLCanva3d to Plater to have a unique instance of them shared by all views

src/slic3r/GUI/Plater.hpp

@@ -10,6 +10,11 @@
 
 #include "Preset.hpp"
 
+#if ENABLE_UNIQUE_BED
+#include "3DScene.hpp"
+#include "GLTexture.hpp"
+#endif // ENABLE_UNIQUE_BED
+
 class wxButton;
 class wxBoxSizer;
 class wxGLCanvas;