- getting the php set up for sprites

We now determine the class and title before the link then apply it to
the link so that we can sprite the link instead of feeding the images in
directly.
- css to deal with the sprite states

This deals with the sprite states for feature :active and when it's not
featured.
adding the core sprite image
- space on the featured column

This just gives the feature column some more breathing room on the date.
whitespace clean up
Remove show_shipping_options tied to onchange

Not applicable in coupons - probably copied and pasted
Extra single quote in display-sales-logs.php

Cleanup on aisle 3
Drop references to BraveNewCode Piggy app

Per Dan, they have dropped the product
Merge pull request #461 from 1bigidea/master

Extra single quote floating around
Merge pull request #460 from 1bigidea/hotfix/coupons

Remove show_shipping_options tied to onchange (in coupons??)
More Piggy(Mobile) Cleanup

Also remove from list-table.php (props Andrew), and pull translation
strings from pot file
Merge pull request #463 from 1bigidea/drop-mobile

Brave New Code has dropped Piggy (iOS/Android Web App)
Merge pull request #456 from curtismchale/feature/417-featured-ui-improvements

Feature/417 featured ui improvements
Coupon Logic was returning true for all items

Dumb bug ignored all logic conditions and just returned true.
Merge pull request #469 from 1bigidea/hotfix/coupons

Coupon Logic was returning true for all items