reorganize and add comments to the blacklight configuration.rb; fixes #817
add production stanzas to jetty.yml and solr.yml; fixes #815
Add two new solr request configurations to allow Blacklight to work with e.g. the RealTimeGetHandler; fixes #819
add default_per_page configuration option, and add a #per_page_options_for_select helper to format the per page options for the template; fixes #818
Merge pull request #820 from projectblacklight/config-fixes

Config fixes