add disabled domain tag label support
depends on !78 (merged) being merged. the merge request will not deal with it
continuation of #58 within the context of #125 (closed).
after the merge request, this becomes simple enough:
- automatically create a
disabled
label inschema.sql
, as well as its own migration - have upload and shorten code understand a domain with that label, there are helper functions in
api.common.domains
to check if a domain has a certain label