UI takes a long time to load

[varunratnakar]

Describe the bug
The UI takes a long time to load

To Reproduce
Load the main page, example: https://dev.mint.isi.edu

Expected behavior
It shouldn't take so long

[varunratnakar]

The issue probably stems from the following line in index.ejs

<script crossorigin src="https://polyfill.app/api/polyfill?features=web-animations"></script>

This third party site tends to hang from time to time. If we remove the above line, load is pretty much instantaneous. Would be good to see which other third party sites we are loading from, and either remove them, or move them to local.