check if solr is configured (in indexer), by default comment solr services
Merge branch 'master' of https://github.com/sourcefabric/Newscoop into CS-4645_improve_solr_indexer
CS-4645: uncomment services (we need them) and add info about listener
CS-4645: add info about listener
Merge pull request #276 from ahilles107/CS-4645_improve_solr_indexer

Cs 4645 improve solr indexer