LPS-33270 Polls refactoring for staging --> please read comments

Hey Brian,

I've checked Shinn's changes for the PollsPortletDataHandler and the related StagedModelDataHandlers and I've applied some source formatting and refactoring which will make it more efficient (using the ActionableDynamicQuery feature) and I've applied other changes to make it more fitting to the SMDH concept. Some of the tests needed an update accordingly.

Thanks,

Máté