Fixed issue where a license validation function was being called on every request.
Improved permission handling of Gravity Wiz licenses and perk registration on subsites for users who are not network admins.
Improved license API performance on WordPress multisite.
Fixed issue where license data would become cached which would cause some actions such as refreshing, registering perks, and deregistering perks to not always show the correct information.
Added "Update URI" to plugin header to improve security.
