`jquery-ui` is still loaded from a CDN. This needs to be packaged and loaded from our GNU Guix profile.
- [x] Package `jquery-ui`.
- [x] Replace `jquery-ui` cdn with a link from the GNU Guix profile.
- [ ] Check and report if there are other js files we load from a CDN.
The jquery-ui was packaged and currently no other cdn package exist
A quick check up on the codebase shows jquery css is loaded from
https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css
new packages being loaded with cdn
https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css
https://cdn.datatables.net/1.11.3/css/jquery.dataTables.min.css
https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js
https://cdnjs.cloudflare.com/ajax/libs/xterm/3.14.5/xterm.min.css
https://cdn.jsdelivr.net/npm/uikit@3.7.4/dist/css/uikit.min.css