Add placeholders for future functions.
Add buttons for install, update, update mods, etc.
Add bootstrap icons CDN.
Remove old CSS in favor of Bootstrap classes.
Add favico.
Update docs.
Renamed main container to web.
Added the STEAMAPIKEY environment variable placeholder, as this is necessary when searching for mods.
Refactor locations of scripts and paths.
Rename start scripts to be more consistent with their new locations.
Run the web server under nodemon to prevent manual restarting.
