* Convert DeleteProxy RPC from HTTP to gRPC
* Use `t.Context()`
* Add more greppable TODO
* Fix usage of deprecated rpc
* Upsert RPC
* Use wrapper message for UpsertResponse
* gofmt
* Simplify godoc
* Update response message
* Update method names on public api client
* fix tests
* Introduce UpsertProxyWithoutServer
* Edoardo comments
* separate
* Change to UpsertProxyServer RPC handler