Set $log_id once for WPSC_Purchase_Log_Page class.
If no controller is specified to handle the Purchase Log page display, but an ID is provided, display the purchase old details by default rather than the list.
Properly show Gateway name in admin report

It was showing "internal name", i believe showing the Display name is best.
It used to show it like that until this commit : https://github.com/wp-e-commerce/WP-e-Commerce/commit/2307c37de20a6fb8f9c06c1badeb41c79d842f8b
Fix Php warning

Fix for #1539
Merge pull request #1540 from misulicus/patch-22

Fix Php warning
Delete downloadable link

Fixes #1542
Merge pull request #1544 from misulicus/patch-23

Delete downloadable link
Add support for Google Universal Analytics.
Google Analytics transaction requires a SKU to identify products. If SKU is empty, use post ID instead.
Merge pull request #1545 from benhuson/analytics

Google Universal Analytics
Add filters for WPSC_Countries methods.
Merge branch 'master' of github.com:wp-e-commerce/WP-e-Commerce
Update some coding standards and add a filter to WPSC_Google_Analytics.  Still some API updates to be done here, separate from this.
Merge pull request #1535 from omarabid/paypal-fork

Digital Goods Gateway
Merge pull request #1500 from misulicus/patch-20

Properly show Gateway name in admin report
Merge pull request #1490 from benhuson/PR_WPSC_Purchase_Log_Page_2

Purchase Log page should display details by default if ID provided.
Remove extra </div> in wpsc_country_list().
Merge pull request #1546 from benhuson/extra_div

Remove extra </div> in wpsc_country_list().
add missing product id parameter
Merge pull request #1550 from JeffPyeBrook/fix-pnp

Function was missing product id paramter