moved custom post types into src/haml/post-types/; separated post types into multiple files; added "people" post type with "people type" taxonomy
moved featured-content shortcode into featured-content custom post php file; developed people to a (mostly) complete state
added "people" shortcode that renders "person" shortcodes
thumbnail shortcodes now use full image size names and allow page_id and url attributes
removed unnecessary class names
tweaked thumbnail styles for better layout when wrapping
rewrote people shortcode from the ground-up to reuse thumbnail shortcode and do less work in the evaluator function; added support for "type" attribute on people shortcode to look-up by a person_type
Merge branch 'feature-staff' into develop
fixed style and font-awesome css identifier mismatch
fixed bug in people page_id lookup