each poll has open bool, early_results bool and close_date timestamp

desired behaviours:
polls should be closed when their close_date occurs
polls which are closed should have results available
polls which are open and have early_results should have results available but not necessarily latest
keep results generation to a minimum, it's not the least intensive procedure

actions:
hourly, run a task that closes overrun polls + gens results and gens results for open early_results polls
when information about a poll is requested, check if it's overrun - close and gen results
when results are requested from an open early_results poll, serve results if they are in db otherwise gen

(INFORMATION ABOUT A POLL IS REQUESTED):
get_poll
get_results

(ALL ENDPOINTS):
/
/about
/polls/new - get/post
/polls/<poll_id> - get/post
/polls/<poll_id>/results
/polls/<poll_id>/delete - get/post
/polls/<poll_id>/delete_by_email - get/post
/polls/<poll_id>/delete_by_email/<token>
/search - get/post