Minor Changes

Made various minor changes to eliminate warnings or to improve clarity.
Minor Change

Minor change to remove a warning
Fixed Pick Block Results

We previously returned the Vanilla counterparts to our doors as the
items to be used by the pick block button - used in Creative mode for
replicating nearby blocks. This was incorrect because we would want to
return the actual door item needed to place the particular door in
question.

More importantly, this might solve our issues with WAILA reporting the
wrong information when players look at our doors. I read the code for
the most recent version of WAILA and it uses various functions to choose
how to identify a block. The result of Block.idPicked() is probably used
as the main source for the identities of our blocks.