Simple fix for payment source.

Steps to reproduce the issue:

1. Add an order through the admin interface
2. Attempt to pay via cheque for a user who has a credit card number
stored in their profile.
3. Submit the form

This will 500, because params[:card] is set from the form on the initial
page for the radio button from the credit card profiles.

This is a simple, though incomplete fix for the issue. A proper fix
would be to change the form so that params[:card] is qualified by the
payment_method which it belongs.

There are also likely issues with multiple payment methods which support
profiles, as there is likely to be confusion between them. This should
suffice for now.

Fixes #5209
Fixes regressions in sprockets >= 2.1.4

Fixes #5311
Fixes #5313
Fix item_adjustment_spec.rb

Test after tax_adjustments callback instead of after promo_adjustments, which was testing a few lines earlier
Fixes #5320
Only cancel cancellable shipments.

Fixes #5321
Fixes #5299

Conflicts:
	core/app/models/spree/order.rb
Allow partial emails when searching for orders
Fixes #5314
Fix git conflict.
corrects fetch_cart urls
Fixes #5325
removes window.location.origin

isn't compatible with Internet Explorer

Fixes #5323
Revert "Only cancel cancellable shipments."

This reverts commit a1daea003802c1bd71ad9db4540ecd29c45283d1.
Dont create product if master variant invalid.
[Fixes #5306]
Fixes #5330
addi18n to prom index
Fixes #5333
Update jquery dep. refs #3203