default_info - converting apply to sync

- db migration adding a new 'default' column for custom_info
- updating the schema
- re-wording from 'apply' to 'sync'
- fixing spec tests

default_info "apply" takes the default_info keys that are specified on
an org, and syncs them with all the systems (or distributors) under that
org. this includes adding custom_info but also removing custom_info
(that may have values attached to it).
966027 - hiding ability to refresh a manifest if its not supported
Merge pull request #2404 from komidore64/default-info-sync

default_info - converting apply to sync
Merge pull request #2415 from jlsherrill/stop_refresh

966027 - hiding ability to refresh a manifest if its not supported