First pass at move viewport -> Update district search.
First pass at move viewport -> Update district search.


Former-commit-id: 732bfe401f4a9fa835966aa8e6de05e71b9d9ef5
JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView