Merged 5.2.N (5.2.2) to HEAD (5.2)

136086 gjames: Merged searchbcr (5.2.1) to 5.2.N (5.2.1)
      135569 gjames: SEARCH-339: Checking for a mandatory set


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@137458 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/rest/api/search/impl/SearchMapper.java

@@ -483,6 +483,7 @@ public class SearchMapper
                     {
                         interval.getSets().addAll(globalSets);
                     }
+                    ParameterCheck.mandatoryCollection("facetIntervals intervals sets", interval.getSets());
                 }
             }