安装界面增加footer，显示当前版本号
安装界面增加footer，显示当前版本号

chekun/DiliCMS,chekun/DiliCMS,apple-tom/DiliCMS,qiuai/DiliCMS,liukaijv/DiliCMS,liukaijv/DiliCMS,apple-tom/DiliCMS,liukaijv/DiliCMS,apple-tom/DiliCMS,qiuai/DiliCMS,qiuai/DiliCMS