SOLR-6149: Specifying the query value without any index value does not work in Analysis browser

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1601318 13f79535-47bb-0310-9956-ffa450edef68
improve javadocs

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1601343 13f79535-47bb-0310-9956-ffa450edef68
add missing override to test class

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1601356 13f79535-47bb-0310-9956-ffa450edef68
Failing test.
Fix hack code and tests.
Allow user to disable facet refinement.
Throw exception if asked for data not on a shard.
Offer multiple fq styles.