Support ms resolution.

Patch from Jay Dawes <ajaxous@gmail.com>

dist/datasource-zabbix/responseHandler.js

@@ -71,7 +71,7 @@ System.register(['lodash'], function (_export, _context) {
     }
   }function convertHistoryPoint(point) {
     // Value must be a number for properly work
-    return [Number(point.value), point.clock * 1000];
+    return [Number(point.value), point.clock * 1000 + Math.round(point.ns / 1000000)];
   }
 
   function convertTrendPoint(valueType, point) {
@@ -86,6 +86,12 @@ System.register(['lodash'], function (_export, _context) {
       case "avg":
         value = point.value_avg;
         break;
+      case "sum":
+        value = point.value_sum;
+        break;
+      case "count":
+        value = point.value_count;
+        break;
       default:
         value = point.value_avg;
     }