Updated gitignore in prep for maintenance commit.
Updated gitignore in prep for maintenance commit.


Former-commit-id: cd28af039dc0532a0f621f56cf0f14f99ebd84a1
JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView,JeffreyBLewis/WebVoteView