1. when object skipped, it should not be duplicated
it is set to unprintable before arrange
and the plate needs to be considered a skipped plate also
2. skip the wipe tower if not multi-color after skip
3. load default configs if there are no configs loaded
4. refine the result.json to include key_values
Change-Id: I8c132cabcdd78756673fe900267a226a41ae1b4d