Fixed time range when using NOW from and to

public/app/core/utils/rangeutil.ts

@@ -133,14 +133,14 @@ _.each(rangeOptions, function (frame) {
       return from.fromNow() + ' to ' + formatDate(range.to);
       return from.fromNow() + ' to ' + formatDate(range.to);
     }
     }
 
 
-    if (!moment.isMoment(range.from) && !moment.isMoment(range.to)) {
-      return formatDate(dateMath.parse(range.from, true)) + ' to ' + formatDate(dateMath.parse(range.to, true));
-    }
-
+    if (range.to.toString() === 'now') {
       var res = describeTextRange(range.from);
       var res = describeTextRange(range.from);
       return res.display;
       return res.display;
     }
     }
 
 
+    return range.from.toString() + ' to ' + range.to.toString();
+  }
+
 export = {
 export = {
   getRelativeTimesList: getRelativeTimesList,
   getRelativeTimesList: getRelativeTimesList,
   describeTextRange: describeTextRange,
   describeTextRange: describeTextRange,