Add way to reload system config.

Author: dualspiral

src/main/java/uk/co/drnaylor/quickstart/ModuleContainer.java

@@ -315,6 +315,15 @@ public final <R extends AbstractConfigAdapter<?>> R getConfigAdapterForModule(St
         return config.getConfigAdapterForModule(module, adapterClass);
     }
 
+    /**
+     * Reloads the {@link SystemConfig}, but does not change any module status.
+     *
+     * @throws IOException If the config could not be reloaded.
+     */
+    public final void reloadSystemConfig() throws IOException {
+        config.load();
+    }
+
     /**
      * Builder class to create a {@link ModuleContainer}
      */