Ensure deleted alternative currencies are removed when saving.
Fix saving of product quantity discount rates.
Improve styling of updated currency UI for Pre-WordPress 3.8
Check for download link from post meta before using it.
Add static modifier to add download link page to avoid warning
Merge pull request #825 from JeffPyeBrook/sputnik-warnings

Sputnik Warnings
wpsc_disregard_shipping_state_fields was missing a return value in some cases
Merge pull request #827 from JeffPyeBrook/mising-return-value-wpsc_disregard_shipping_state_fields

Missing return value in function
removed unreferenced global.
removed call to get_post_type_object() whose return value was never used.
query will retrieve post types of 'wpsc-product' by default, consistant with other similiar queries.
query post type is overridable using a new filter that is similiar to the other filters on the same query.
fixed whitespace
restored erroniouslly removed global variable
Merge pull request #829 from JeffPyeBrook/query-start

Start product query fixes
Merge pull request #817 from benhuson/issue_777_pricing

Fix saving of alternative currencies and quantity discount rates
Remove prices on extensions

Remove the prices since they are outdated and prices can vary all the time
Remove Google wallet from description

Since is no longer supported.
Session active and start is different depending on version of PHP.
Avoid session already active warnings by using PHP functions rather than globals.
updated comment on wpsc_core_load_session.
Bump version
Merge pull request #831 from misulicus/patch-6

Remove prices on extensions
Merge pull request #832 from misulicus/patch-7

Remove Google wallet from description
adjusted booleans returns to return expression result.
added @since 3.8.14 in the doc block.
fixed whitespace.