Merge pull request #460 from metabase/incl_dims_in_breakout

include fields with "dimension" field_type in our breakout list in query builder

resources/frontend_client/app/explore/explore.services.js

@@ -36,7 +36,7 @@ ExploreServices.service('CorvusFormGenerator', [function() {
     }
 
     function isDimension(field) {
-        return isDate(field) || isCategory(field);
+        return isDate(field) || isCategory(field) || isInTypes(field.field_type, ['dimension']);
     }