1.9.15

Release 1.9.15

Changes since 1.9.14:

• Rewrote download counter using vanilla JS
• Removed JQuery dependency on downloads page
• Fixed a bug where the disable buttons on the build list would
  only work for the first build in the list
• The maintainer page now shows the correct HTTP error response
  code of 403 instead of a generic 404 if the maintainer does not
  have the necessary permissions to modify the given device
• Removed dirty way of updating the page after the upload has
  completed, which means navigation history is preserved and the
  reloaded webpage keeps state
• Made the build upload page resilient against errors and disabled
  inputs on upload start
• General code cleanup