I noticed part of our poll url routes are like `submit_poll` `poll_result` and `poll_topics`. Sorry if this is a little bikesheddy, but I'm wondering if should namespace these kinds of things further, so something like:

  - `/ureporters/(str:backend)/(str:user_address)/poll/(str:poll_id)/submit`
  - `/ureporters/(str:backend)/(str:user_address)/poll/(str:poll_id)/result`
  - `/ureporters/(str:backend)/(str:user_address)/polls/topics`

It would help keep things clean for cases where we add new poll-related things, since we would otherwise start adding `poll_<thing>` each time we add a poll thing. This isn't too important, but thought I should bring it up anyway.