Added title attribute to field keys in meta view

Change-Id: I34c046431c6674034868444e8a68c7b5e994253b
diff --git a/dev/js/src/match/meta.js b/dev/js/src/match/meta.js
index 2edae65..a806e2e 100644
--- a/dev/js/src/match/meta.js
+++ b/dev/js/src/match/meta.js
@@ -77,7 +77,9 @@
             k !== "layerInfos") {
 
           var metaL = document.createElement('div');
-          metaL.addE('dt').addT(k);
+          var dt = metaL.addE('dt');
+          dt.addT(k);
+          dt.setAttribute("title", k);
           metaL.addE('dd').addT(metaInfo[k]);
 
           metaDL.appendChild(metaL);