Summary:
General cleanup and separation into generic vs Stripe blocks of code.
- There was an old CC form view for Stripe stuff that I never cleaned up; clean that up.
- Move non-Stripe CC form rendering into a base class (Balanced can reuse it).
- Move non-Stripe CC form JS into a shareable class.
- Simplify JS a bit (JX.Workflow can add extra parameters to a request, so we don't need hidden inputs).
- Genericize CSS.
- Depend on Stripe JS directly, if they're down we're not going to be able to add cards anyway.
Ref T2787.
Test Plan: Hit all Stripe errors and added new cards.
Reviewers: btrahan, chad
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T2787
Differential Revision: https://secure.phabricator.com/D5758
a8bc87578e