Openbazaar python launcher

new pull request after 1st round of reviews.
Thanks @Renelvon this has the merged changes from your repo.

(@Renelvon I kept that REVERT commit you put there as I'm not sure I understood what was right or wrong about it, I figured it'd be easier to fix here now)
the idea was that several of the long names didn't make sense or were confusing, however I wanted to maintain backwards compatibility. I'll remove. If they complain, we'll add whatever  is better, I just want to make the command line user experience make sense to as many people as possible with mnemonics.

will remove

:+1: