- during validation stage:
            Event 1: validate_resource
                - run on each Module in URL path
                - binders:
                    - cb_users_*
                        - load user_id into context
                    - cb_accounts
                        - load account_db/accout_id into context

            Event 2: validate
                - only run on last Module, like resource_exists

        If only resource_exists() method took Context as parameter, could fold o
Merge pull request #622 from aberke/lenient-validate-stage

w00t!
master: fix spec name
KAZOO-2630 refactor fax status to support both incoming/outgoing events
added `bridge_id` to cdr listings
master: call validate_resource in cb_accounts instead
Merge pull request #623 from siplabs/KAZOO-3126

KAZOO-3126: added `bridge_id` to cdr listings
master: use real function name this time
KAZOO-2630 remove dead code & comments
KAZOO-2630 fax status structure identical for send & receive
KAZOO-3025: fix crossbar_listing to provide summary information
KAZOO-3025: update notifications schema
KAZOO-3025: add clause for handling '*/*' Accepts header (from curl when
you don't specify it)
KAZOO-3025: expose refresh_account_db/1 for updating views in an account
KAZOO-3025: add spec
KAZOO-3025: add spec
KAZOO-3025: update docs about macros
KAZOO-3025: strip macros object from PUT/POST
KAZOO-3025: initial commit of the teletype app
KAZOO-3025: update listeners and bind for all notifications
KAZOO-3086: create skel template module