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


Former-commit-id: 75cd32eae42fb421b04d728817aa3de34fb071d4
JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView