Action parameters: update input/output definition
Use references to resources instead of object IDs, DNS resolver resource
Use new authentication providers, supports HTTP basic, token auth is not implemented
Implement API token auth, not using validity yet
Token auth: set, return and check token validity
Token auth: save user agent as a label to a generated token
Implement resource pagination, fix IP address listing
Add per-IP shaper

New transaction to update shaper, IP add and del transactions
are shaper-aware.
Add migration for shaper
Add transaction for shaper manipulation
Shaper limits: change sql data type to bigint
Allow changing root shaper
Shaper migration: make vps_ip.class_id unique
Node.Index: fix missing location