1.9.1 - Release 1.9.1

This is a small basic update which fixes some bugs identified in the 1.9 release.

- Added users details to the orders view page

- Fixed free items not being able to be downloaded

- Fixed an issue where removing staff would not fully remove them

- Fixed issues with order statues not updating correctly

- Fixed the close button in gallery breaking

- Fixed the 502 offline page CSS

- Fixed payment from values on payment receipts

- Changed some backend elements to clean up some unused code