xF2 Add-on [NixFifty] Gift Upgrades 2.4.3

• Fix anonymous gifts not being marked as anonymous as expected.
• Fix "Cannot call method canGiftTo on a non-object (NULL)".
• Fix incorrect visibity on the _postDelete() method in the GiftUpgrade entity.
• Fix a potential issue where gifted upgrades were not marked as such.
• Add additional indexes to xf_user_upgrade_expired/xf_user_upgrade_active tables.

• Only inject User Essentials templates if that add-on is active.

Version 2.4.1

• Add missing relation to UserUpgradeExpired entity.
• Fix issue with permission checking logic when verifying if a user can be content gifted.

• Allow recurring upgrades to be gifted. The first term will be paid for by the gifter and the giftee can choose to renew upon its expiration.
• Expose Recent Gift Post's widget date limit as a configurable option.
• Add missing relation to the UserUpgradeExpired entity.
• Fix potential issues surrounding the giving of free gifts.

• Add icon back to the "Gift" button.
• Allow sending free gifts from the account upgrades page.
• Fix a no permissions error that could occur when gifting from the account upgrades page.

• Add option "Exclude warned posts" from recent gifted posts.
• Add an icon to the "Gift" button.
• Fix MySQL 8.0 compatability when upgrading from versions earlier than 2.1.0.

• Now requires PHP 7.0+.
• Now depends on Standard Library by Xon.
• Properly hide "Gift" button for guests.