Initial setup of the Promo package.
 * PEAR strture
 * Dataobjects
 * Sql
 * Basic admin
Just require the promotion dataobject at the top of the Application.

This is always going to be required by initModules() so no point trying to control when it's required.
Kill PACKAGE_ID

PACKAGE_ID is no longer used in SiteLayout, and is old cruft not needed in a new package.
cleanup comparisions to use instanceof and compare against ''
CS
more comparision cleanup
promotion total is a float, so don't use a strict comparision.
remove dead code.
Clean up the promotion code pager.

Moving it outside the SwatFrom allows it to be automagically processed.
Just return the PromoPromotionCodeWrapper - less code, same tasty goodness
Remove html from translatable strings.
newline cleanup
Merge pull request #6 from isaacgrant/initial-package

Initial setup of the Promo package.