SOLR-2345: refactor out GeoDistValueSourceParser from HaversineConstFunction

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1496731 13f79535-47bb-0310-9956-ffa450edef68
fix silly perf bug in DrillSideways (we don't need freqs from the DocsEnum); add missing null

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1496925 13f79535-47bb-0310-9956-ffa450edef68
change if to assert

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1496945 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4921: UI now supports adding documents to a collection

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1496994 13f79535-47bb-0310-9956-ffa450edef68