增加global_static hook关键字,并优化menu的文件加载hook

"hook":[
		{
			"tag":"global_static",
			"global_static": {
				"css_path":"menu/own_style.css",
				"js_path":"js/own_style.js"
			}
		}
	],

plugins/webssh/index.py

@@ -25,7 +25,7 @@ class App():
 
         self.__host_dir = self.getServerDir() + '/host'
         if not os.path.exists(self.__host_dir):
-            os.makedirs(self.__host_dir)
+            mw.execShell('mkdir -p ' + self.__host_dir)
 
     def getPluginName(self):
         return 'webssh'