htdocs/index.php: break very long line.
htdocs: add a node.js method for minifying the files.

Run `node make` or `node make minify`.

Additionally, you can use `npm run check` or `npm run lint` to check our js and css files for errors with JSHint and csslint.
htdocs: update picnet table filter
htdocs/site/css/all.css: clean up link styles