Search Engine Optimization - Friendly URLs

Trello Card: https://trello.com/card/search-engine-optimization-as-a-user-i-would-like-bing-and-google-to-show-me-search-results-from-chronozoom-content/50ff1514faa0370c12000742/149

Code Review (Approved): http://mrccodereview.cloudapp.net/ui#review:id=1190

Enabled friendly URLs. Mainly, this change is intended for search engine optimization but this is also a good change to help users address their content in a clean way. This change enables URLs like:

http://test.chronozoomproject.org/aids-timeline/aids-timeline/aids-memorial-quilt
http://test.chronozoomproject.org/aids-timeline/aids-timeline/reaching-out
http://test.chronozoomproject.org/aids-timeline

Or directly using their GUID:

http://test.chronozoomproject.org/aids-timeline/aids-timeline/0ecb94e4-9885-4168-a1dc-134dcff1e7ba