Map/View switcher working
Various polish and bug fixes

* Remove circular reference between map/list views and controller
* Update both map and list when filters change
* Add comments
* Clean up view switcher logic
* Remove cruft
* Remove filler table section header
Bug fixes, custom PollingLocationCell
Comment cleanup
Merge branch 'develop' into feature/add-nearby-polling-list

Conflicts:
	objc/VotingInformationProject/VotingInformationProject.xcodeproj/project.pbxproj
	objc/VotingInformationProject/VotingInformationProject/Base.lproj/VIPStoryBoard.storyboard
	objc/VotingInformationProject/VotingInformationProject/Controllers/NearbyPollingViewController.h
	objc/VotingInformationProject/VotingInformationProject/Controllers/NearbyPollingViewController.m
Cleanup from PR comments
Merge pull request #40 from bhuber/feature/add-nearby-polling-list

Feature/add nearby polling list