[Liam W.] Post Macros 5.3.0 Fix 4

This version adds interim support for XF 2.1 - version 5.1 is in development, with exciting new features!

Note: Version 5.0.1 requires XF 2.1 and PHP 7. Version 5.1 will also have these requirements.

Note: After upgrade/install you need to add the post macros button to your editor toolbars. This is not done automatically.

Fix bug which caused XenForo boards not hosted at URL root to be incompatible with macros

• Improved macro list display
• Many minor bug fixes
• Stable version

• Fix an issue where permissions weren't being rebuilt when a new global macro was created, causing no-one to have permission to enrol into the new global macro.
• Minor performance improvements.

Betas 6-9 fix bugs and improve performance of the add-on.