Register core merchant component.
Fix: Decouple merchant components' configuration UI from settings page.
Move merchant component admin functions to a separate file.
Separate core merchant v2 code for saving gateway options.
Final commit.
Fix: Wrong cache set for checkout form data.
Prevent old paypal express from hijacking new paypal express callback.
Use submit_button() instead of raw HTML to output Save Changes button.
Merge pull request #40 from wp-e-commerce/merchant-api-as-component

Merchant API as a component