Gravity Perks (Gravity Wiz) 2.3.14

Added support for enforcing minimum requirements for GP_Plugin/GP_Feed_Plugin-based perks.

-Fixed issue where incorrect response for announcements would cause PHP notices
-Fixed confusing message when running into license site limit
-Upgrade links/buttons are no longer disabled

-Fixed issue where incorrect URL was used to check, activate and deactivate licenses.
-Fixed issue where announcements did not show up for non-English sites.