Index.html, Additem.html

Added "Feature Search Browse" to index.html. Added some consistency in
styling to additem.html.
Redirect, 404

Enabled redirect from 404 page back to home page (safe exploration).
Search Functionality, Center Stage

Redirected search to 404.html, added more visually appealing center
stage.
CSS

Removed uncessary CSS.
Final Styling, CenterStage, Redirect

Adjusted to keep browse above the fold. Updated CenterStage image for
same reason. Added redirect to additem.html.