Updates to About Page

[mkrusche]

Adjust text and html according to the mockups: http://www.crc.nd.edu/~kfurse/njcoast_keansburg/about.html

update 5/7

• [x] update "request a user account" link to point to https://dev.njcoast.us/account/signup/
• [x] update "Request a user account" button to point to https://dev.njcoast.us/account/signup/
• [x] add png's for the University of Notre Dame and University at Buffalo, image location: https://github.com/NJCoast/cyberspatial-ui/tree/master/njcoast/static/images
• [x] link "Learn more" to https://dev.njcoast.us/resources-shp/