Improve validations on Institution class.
A Description Object must belong to an institution. [Delivers #54518060]
Modularize the Solr filter that limits records to current institution.
Finally figured out a way to index DescriptionObjects based on their Institution name.  Not sure this is the best method, but it does work.  Additional problem that the helper method doesn't change the appearance of the text on the filter list.
Update README to guide user in their setup of the first user.
Merge branch 'release/0.21'