Rename moz_up_interest to moz_interest in table names and pound defines.
Replace (namespace,locale) with a "locale/namespace" serverNamespace tag
Renamed methods to relate to serverNamespace and IFR manipulation
Use _update() wrapper instead of __updateServerNamespaces()
Chain setInterest and setInterestIFR promises and test for a non-existing interest
Remove server_id from database and APIs.
Fix styling
Rename vairable to be consistent
Refactor long lines
Extract interest namespace from serverNamespace and setInterest to it