rbt review edit was attempting to access options.no_ship_it, which

doesn't exist and caused a crash. Both --ship-it and --no-ship-it

set options.ship_it.
This has been reworked to check just options.ship_it, and to check for

its presence using None rather than truthiness/falsiness.

Tested all rbt review commands and all options, verifying the results

on my test server.