api: spec draft
api: update api draft, remove X- prefix due to RFC6648
api: code draft
api: more code draft
api: working auth api decorator
api: implement management token apis, new table api_tokens(user_id int, description varchar(30), token varchar(50) not null)
fixup; return json error if 401, use header to auth
fixup: api GET containers return a more useful information
frontend: add a view to manage the api token, table api_token modified
Merge branch 'api'
tag 0.6