Silence Yammer API rate limiting errors

* Silences rate limiting errors for activity creator

https://trello.com/c/Vplr2hCQ
Users can view polls they own & polls to which they are invited

* Adds more descriptive column labels to user dashboard

https://trello.com/c/IU53P2Ra
https://trello.com/c/laiJ8oGo
wip
wip, test tomorrow