rework

1. New folder and file structure
- All associated paths  changed to match new structure

2. Major work on navigation
- Fresh write, started from ground up
- First level submenu and child menus start at bottom of main navigation
bar instead of from the list item. I like this behavior, but need to
diagnose why and be able to write a better submenu if necessary
- Z-index: 999 added to any UL that is a child of a LI in
UL.nav-list-main
- Mobile navigation: Works fine, need to come up with a better display
for child menus and list items. Currently all indented on the same level
(bug), will resolve with better indentation in next commit.
- Should probably come back to navigation and rewrite again with better
logic / structure.

- Other various changes