Better support for other platforms

Current known bugs:
* Cannot upload files on Windows 10 Home Build 18362 (Others have mentioned that it works on linux, but it doesn't work for me on Manjaro 18.1)
* After a few minutes of waiting, this error appears in the browser console on both Windows and Manjaro:
`Source map error: request failed with status 404
Resource URL: https://assets.csh.rit.edu/csh-material-bootstrap/3.3.6/dist/csh-material-bootstrap.min.css
Source Map URL: csh-material-bootstrap.css.map`
* Cannot remove files on Firefox v69.0.3 for Windows, v69.0 on Manjaro, or v68.1.1 on Android