Creates and styles global footer. Adjusts margins and leading to reduce white space in header.
Hide records without a title

hides side effects of data issue for #26
fix nil object iterator

Fixes iterator for searches that do not return a result from Geonetwork.

closes #24
Merge branch 'sinatra' of github.com:scholarslab/geoportal into sinatra
Adds social media links.
Position: absolute for global footer.
Fix newline issues

Swap out nl2br method for Nokogiri::HTML method to avoid extraneous <br> elements
Merge branch 'sinatra' of github.com:scholarslab/geoportal into sinatra
Tightens up whitespace in site copy.

* Changes in font size, margins, and leading for headings and other elements.
* Uses two-column layout for individual item pages if screen width is greater
* than 720px;
Moves layer switcher select.