servertimestamp now returns the .sv: timestamp object

Author: Salakar

Diff for: lib/modules/database/index.js

@@ -43,7 +43,7 @@ export default class Database extends Base {
 
   get ServerValue() {
     return {
-      TIMESTAMP: this._getServerTime(),
+      TIMESTAMP: FirestackModule.serverValueTimestamp,
     };
   }