* New: Improved the visuals of various UI elements in the admin.
* New: Added the Donation Payment ID to the Gift Aid CSV export file for reference.
* New: Added the ability to sort Gift Aid report by date.
* Tweak: Added template tag references below WYSIWYG editors.
* Tweak: Moved the "Long Explanation" setting for a more logical flow for admins when setting up the plugin.
* Fix: If the plugin was activated with existing past donations those donations would incorrectly show Gift Aid as "Rejected" instead of "Disabled".
* Fix: The "Country" gift aid address field is now properly preselected to the UK.
* Fix: If two of the same donation forms were embedded on a page it would cause Gift Aid fieldset JavaScript issues.
* Fix: The Gift Aid icon is looked grainy and not retina quality. It's now much sharper.
* Fix: Improved admin UX by ensuring elements that are hidden don't flash when the page is loaded.
