Does not create cron events for unknown schedules

Tests schedules to se if they are known before creating cron events.
Without the test cron events were being created for schedules inserted
by third-party plugins
removed .gitignore
Eliminate the queing of dynamic js script
Eliminate dynamic js
* Implemented logic to autoamtically create globals in javascript based on properties sent to javascript using wp_localize_script
* New private function that sets up the wordpress localization array
* New public hook that lets plugin authors, themers and WPEC devs add new global javascript variables by adding to the localization array
Coding standard changes
Coding style cleanup for cart api, no intentional logic changes
Updated headers, documentation and confirmed return values
Merge remote-tracking branch 'upstream/master' into eliminate-dynamic-js

Conflicts:
	wpsc-core/wpsc-deprecated.php
Eliminated dynamically generated admin javascript
Merge remote-tracking branch 'upstream/master' into only-known-cron-events-fix

Conflicts:
	wpsc-core/wpsc-functions.php
Colorbox CSS - Remove IE6 hack.

Remove support for IE6 transparency hack. We don't include the required images anyway (so wasn't working). Plus: http://www.ie6countdown.com/

Signed-off-by: Andrew <dent.ace@gmail.com>
Fixed conditional testing to see if localizations have already been applied. Defect was introduced in last commit.
Deprecated unused localized javascript variables
Added utility functions to easily get ajax url
Eliminated shipping re-calculation on every page view
Eliminated superflous update shipping quotes AJAX call on shopping cart page
Eliminated superflous get cart data AJAX call on shopping cart page
Eliminated superflous get customer meta calls on shopping cart page initialization
Consolodated two ready blocks in javascript
Deprecated unused localized javascript variables
Added utility functions to easily get ajax url
Eliminated shipping re-calculation on every page view
Eliminated superflous update shipping quotes AJAX call on shopping cart page
Eliminated superflous get cart data AJAX call on shopping cart page
Eliminated superflous get customer meta calls on shopping cart page initialization
Consolodated two ready blocks in javascript
updated localization vairables
ajaxurl was being defined in multiple localizations, removed the extra localizations.
All references to ajax url updated to use the global admin localization from wp-e-commerce-admin script, accessed using the global access function.
switch to global ajax url utility function from old variable
Merge pull request #1013 from ace-dent/feature-css_tidy2

Colorbox CSS - Remove IE6 hack.
Revert "Colorbox CSS - Remove IE6 hack."

This reverts commit 270090af474fd734634b94a8bd4bc8e0ff9f008b.
First pass at extending capabilities in our importer.