R1:41a265b46478

Update Javelin and packaging

Summary:
- Update the Javelin submodule to pick up recent fixes (like D1749).
- Update the package definitions do do a slightly better job of packaging
resources.

Test Plan:
Up and down work in tokenizers now. Pages load slightly fewer
resources.

Reviewers: vrana, btrahan

Reviewed By: btrahan

CC: aran, epriestley

Maniphest Tasks: T927

Differential Revision: https://secure.phabricator.com/D1751