Move the theme function files from inc/ into namespaced lib folder.

Use PSR-0 format so we can extend the composer autoloader and use it for our theme files
Refactor front-end, admin and other code into their own theme modules.
If we are not viewing a post, look for a content-{post_type).php template file, otherwise look for a content-{post_format}.php template file.
Remove additional edit post link on pages
Add a .search class to search form