updates on header, footer and stage

- Responsive header structure done (needed some changes in colours and other details)
- created search function (under dev because of responsive design)
- footer: added social icons
- styling for landing page stages
- cleaning of some unused old styling
delete some css files

delete some css files
javascript for search function
Merge branch '2014_html_prototypes' of https://github.com/victorgonal/HultFramework into 2014_html_prototypes

- deleted gumby.css
- added code for sticky bottom menu