Replace broken links in image browser with corresponding ScienceBase links, but it isn't a 1 to 1 mapping. Also updated the description of the program on the home page.
Replaced broken links in image browser for projects without a corresponding ScienceBase record to the main GLRI record.
Merge branch 'master' of https://github.com/USGS-CIDA/glri-catalog into develop

# Via David Uselmann
* 'master' of https://github.com/USGS-CIDA/glri-catalog:
Merge pull request #116 from jlucido2/master

Fixed broken links in image browser