Dev- big update with scss and foundation

 - consolidated SCSS into 6 files. Move unused SCSS to folder 'unused-scss'
 - Uses foundation's 'panel' class for block containers
 - left top navigation and homepage accordion alone.
 - Adjusted JavaScript files to changes made in HTML
 - Created a very used Jekyll Include called 'stage-nav.html' that automatically paginates through all the   stages pages, and takes a title argument and "search= 'true'" to allow a search input. Also works with 'terminology.html' and 'faq.html'.
 - Left 'stafflisting.html' alone since it's not used in the website