refactor urls for backbutton nav support
Merge pull request #121 from duselmann/urls380

GLRIDB-382: refactor URLs for backbutton nav support
interum solution (fast) to remove 'Tempalate' keyword from template tags
Merge pull request #122 from duselmann/template374

GLRIDB-374: interim (fast) solution to remove 'Tempalate' keyword from template tags
add comma sep
Merge pull request #123 from duselmann/template374

GLRIDB-374: add comma sep
Merge branch 'master' of https://github.com/USGS-CIDA/glri-catalog into develop

# By David Uselmann
# Via David Uselmann
* 'master' of https://github.com/USGS-CIDA/glri-catalog:
  add comma sep
  interum solution (fast) to remove 'Tempalate' keyword from template tags
  refactor urls for backbutton nav support
Linked carp project pages to dead link. Made science base links in 'learn more' of image browser open in a new tabs.