updating UofM solr configs to match DGI standards

DGI has standardized the format and pathing for gsearch solr configs. We are utilizing this format with all clients going forward as in our own internal development environments. The new structure can be used when setting up the new uofm server. The old server should be ok unless it ends up needing solr gsearch changes before the switch over in which case we can look at modifying the existing setup. Basically just removing the top level gsearch_solr folder, changing gsearch_solr to Fgsindex in the pathing and renaming demoFoxmlToSolr.xslt to foxmlToSolr.xslt