KAZOO-1620: formatting
KAZOO-1628: bill for port, and move numbers off port to numbers DB
KAZOO-1620: updated curl examples with more state moves
KAZOO-1620: fix the setting of response headers to use the list instead of the context record
KAZOO-1620: transition port request
KAZOO-1620: add more specs
KAZOO-1625: move numbers on the port request doc to the numbers db
KAZOO-1625: transition numbers in on offnet request
KAZOO-1620: update specs, remove dead code
KAZOO-1620: add a get/1 alias in wh_port_request