* Refactoring poll/vote/skip logic
Favor asking the poll if the user has already voted instead of relying
on the poll vote or skip to know about the implementation
details (e.g. should a poll vote know that there's a related model call
poll skipped? likely not)
This refactor also tidies up the specs, for which there's quite a bit of
chatter.
Found via the `flay` gem.
* Adding method documentation
Also need to bump gitpod's build as it halted for the prior commit.
