Eliminate Undefined variable errors in wpsc_obtain_the_description

This poorly-written function is now less poorly-written. Removed
unneeded globals, test $_GET variables before using, removed direct
query to database
Typo in last commit

Got too carried away
Stop testing for category ID - just return output if set

Poor logic begets poor logic
Remove pubdate from product feed. Fixes #354
improve column widths on product page
improve featured star rendering.
improve product CSV import admin panel layout and behaviour. add support for more weight units. show up to 5 rows of sample data. feedback how many records were imported. support adding newly created products to no category.
improve product categories
bring more code up to coding standards
improve general admin tab layout
merge CSS changes from my product category changes
improve checkout fields editor to show heading hierarchy better
improve checkout settings. improve checkout form fields column widths. improve positioning of edit options link for select, check and radio boxes.
Removing blank line at end of file.
Fixed deprecated notice for gateway function.  Fixes Issue 297
Fixing some notices.
Use product description instead of category description.  Props @bentleykf.  Fixes #280
Kill some notices in tax bands on product admin
Removing reliance on deprecated nzshpcrt_get_gateways() function, as it causes fatal errors with WP_DEBUG turned on when saving gateway settings.
Version bump