Improve scrolling inertia
Improve scrolling inertia

Summary: For whatever reason scrolling has be striking me as significantly worse than when I was testing it... bad enough that it needed to be changed before demos.

Test Plan: manual

Reviewers: cbrown

Reviewed By: cbrown

Subscribers: mike.naquin

Differential Revision: https://phabricator.watchonair.tv/D939

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