Completed Developer API inline docs
Added Cart Theme API inline docs
Added money options across the API
Added half of the inline docs
Sort Payment gateway dropdown menu

At this moment payment gateways show up in the order they are installed. Shipping methods however are sorted.
It would be better to use SORT_NATURAL to have iDEAL show up at the right spot too but that seems to be a PHP 5.4 option.
Closed #3054 Use plugins_url() to allow domain mapping
Merge branch 'issue/3054'
Improved copy/paste compatibility on promocodes.
Added trim to promocode matching.
Added more specific promocode errors.
Merge pull request #3047 from Just-m/JM-payment-order

Sort Payment gateway dropdown menu
Removed unnecessary trims.
Added trim sanititation of promo code discount rules.
Removed unnecessary promocode matched checks.
Implemented a validcode function.
Merge branch '1.3.x' of code.shopp.net:core/shopp into 1.3.x
Fixed #3053 Correctly process registrations, auto-login and redirect
Merge branch 'issue/3053'
Fixed #3056 Stripslashes and wpautop the note
Merge branch 'issue/3056'