KAZOO-1923: cleanup wnm_bandwidth
KAZOO-1924: Vitelity stub carrier module
KAZOO-1923: spec/type updates, move decr_timeout to wh_util
KAZOO-1923: add insert_value/3 which will only set a value if it doesn't exist already
KAZOO-1924: start to process XML responses from Vitelity
KAZOO-1923: fix spec
KAZOO-1923: xml helper funs
KAZOO-1923: use the xml helper module
KAZOO-1924: find numbers using the various Vitelity APIs
KAZOO-1924: remove logging
KAZOO-1924: handle no numbers in an NPANXX rate area
KAZOO-1923: fix spec type
KAZOO-1924: handle tollfree searches
KAZOO-1924: set defaults so the system_config doc is updated
KAZOO-1924: classify supplied prefix (if possible)
KAZOO-1924: specs
KAZOO-1923: add rudimentary to_querystring to props
KAZOO-1924: build query string params vs using templates
KAZOO-1925: add functionality to acquire numbers from Vitelity
KAZOO-1923: add wnm_skel for carrier modules