KAZOO-2129: First draft; Store transaction in modb
KAZOO-2129: Change name from kazoo_mod to kazoo_modb
KAZOO-2129: Rollup transaction when missing from MODB
KAZOO-2131: Update crossbar for transaction im modb
KAZOO-2183
addition to KAZOO-2118
bindings_server: create kazoo bindings application
bindings_server: keep Crossbar-specific code for bindings

move rest to kazoo_bindings application
Merge pull request #268 from 2600hz/bindings_server

Bindings server
KAZOO-2183: adding sanitizing function to enforce only correct values out of couch
KAZOO-1674: normalize all response headers to lowercase

Strip off any encoding information from the content type
KAZOO-2086: set pvt_account_id to raw account id
KAZOO-2129: Specs
Merge pull request #250 from 2600hz/KAZOO-2129

KAZOO-2129: First draft; Store transaction in modb
Merge pull request #270 from 2600hz/KAZOO-2086

KAZOO-2086: set pvt_account_id to raw account id
Merge pull request #269 from 2600hz/KAZOO-1674

KAZOO-1674: normalize all response headers to lowercase
Merge branch 'addition-to-KAZOO-2118' of https://github.com/onnet/kazoo into onnet-addition-to-KAZOO-2118

Conflicts:
	core/whistle_apps-1.0.0/src/whapps_call_command.erl
Merge branch 'benchan/singular_call_hook' of https://github.com/Sendhub/kazoo into Sendhub-benchan/singular_call_hook
do not ignore CHANNEL_DESTROY event, ensure they are for our call-id, and slight cleanup of cf_singular_call_hooks
KAZOO-2193: function expects a binary not the json object, also added the missing /binary