系统的模板目录在系统根目录下的templets内，下面是模板目录的文件目录结构。
templets┣━ default ······································· 默认模板目录┃ ┣━ style ······································· 模板CSS样式目录┃ ┣━ js ·········································· 模板JS脚本目录┃ ┗━ images ······································ 模板图片目录┃┣━ lurd ·········································· LURD系统模板┃┣━ plus ·········································· 插件模板目录┃┗━ system ········································ 系统底层模板目录