Added SDToolPalette
Added tool palette property to SDVC
Added ability to create button background images
Reorganized draw modes
Changed NSUD KEY_COLORPICKER to KEY_COLORPALETTE and moved it to SDVC
Changed side menu views background color to have transparency
Nice buttons in color picker views
Forgot to add a change to NSUD KEY_COLORPALETTE
Completed SDToolPalette initial implementation
Incorporated ne SDToolPalette into SDVC