Add and remove constraints from the corpusByMatch assistant

Change-Id: I508312e6c431d0602471eb75fd06e845ffd63631
diff --git a/dev/js/src/match/meta.js b/dev/js/src/match/meta.js
index d4e481e..e273a39 100644
--- a/dev/js/src/match/meta.js
+++ b/dev/js/src/match/meta.js
@@ -81,7 +81,8 @@
           dt.setAttribute("title", k);
           
           let metaDescr = field["value"];
-          metaDD =  metaL.addE('dd');
+          metaDD = metaL.addE('dd');
+          metaDD.setAttribute('data-type', field["type"]);
           
           if(metaDescr instanceof Array){
         	  metaDD.classList.add("metakeyvalues");