Summary: Fixes T3553. Did it by adding some code that refreshes the File object on keyup events within a given file entry. also fixes an html derp I found trying to fix this.
Test Plan: added cool things like 'bbb' to every field and noted they were maintained when I added more files
Reviewers: btrahan
Reviewed By: btrahan
CC: aran, Korvin, chad
Maniphest Tasks: T3553
Differential Revision: https://secure.phabricator.com/D6488
dd76143399