Cleaned up and updated with new progress

Removed 'layout' template_parts. Going to switch to something better
later.

Removed 'main' div. That should be added as needed.

Removed all content from front-page. Sldieshows are different from site
to site and that news post list is in sidebar.php.

Changed scripts/ to js/ and images/ to img/ (shorter). Changed app.js
to site.js cause we're not building apps..