PROV-757 Solr configuration generator now actually works again and is embedded in caUtils

I tested with Solr 4.6.0 and might have broked support for older
versions in the process. Please let me know if you find anything.
PROV-757 Remove commit and optimize options
PROV-757 Updated Solr plugin to work with revised indexer
Merge branch 'master' of github.com:collectiveaccess/providence