v1.1.3.1 - Hotfix

This release is a hotfix to resolve the following 2 issues:

Due to multiple issues with the Filesize.js CDN server, we have moved their library into our own code. If you see folders but no files, that would be due to this issue.

When using Apache, the file manager would occasionally show no files and instead show an [object Object]. This was due to improper headers being sent back. #795