* I've moved the one remaining file in resources/ to modules/.
The repo had both resources/ and modules/.
* Class files are named after their class.
* Files with init logic on a page are named init.js.
* Files that only export re-usable classes for another module,
are named index.js.
Bug: T193826
Depends-On: If661c68bea069e99cfff35711efdde7805a12851
Change-Id: Ic8975d7ba349ba50f9039545d2eb8d912ccdce26
