Added functions check_initial_registration and check_initial_call to see account's initial call/registration status from sup
Removed un-necessary AccountDb assignment, moved to using couch_mgr:open_cache_doc (incl the system_config db) and defined input_term()
Merge branch 'voxter-feature-checkinitial-sup' of https://github.com/voxter/kazoo into voxter-voxter-feature-checkinitial-sup
cleanup specs
Merge branch 'voxter-voxter-feature-checkinitial-sup'