SOLR-4079: Long core names break web gui appearance and functionality (merge r1429292)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1429293 13f79535-47bb-0310-9956-ffa450edef68
SOLR-4263: Incorrect Link from Schema-Browser to Query From for Top-Terms (merge r1429296)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1429297 13f79535-47bb-0310-9956-ffa450edef68