微信加入班级弹框css兼容；app页面meta标签修改

public/assets/wechat/app.html

@@ -6,9 +6,9 @@
     <meta charset='utf-8' />
     <meta name="keywords" content="" />
     <meta name="description" content="" />
-    <meta name="apple-mobile-web-app-capable" content="no">
+    <meta name="apple-mobile-web-app-capable" content="yes">
     <meta content='True' name='HandheldFriendly' />
-    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
+    <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no" />
 
     <link type="text/css" rel="stylesheet" href="/stylesheets/weui/weui.min.css" />
     <link type="text/css" rel="stylesheet" href="/stylesheets/weui/weixin.css" />

public/stylesheets/weui/weixin.css

@@ -155,7 +155,7 @@ a.underline {text-decoration:underline;}
 .locked_btn_cir {background: url("/images/wechat/locked.png") 0 0 no-repeat; cursor: default;}
 
 /*20150612加入班级样式*/
-.add-class-box {position:fixed; width:80%; max-width:300px; min-width:240px; font-size:15px; color:#444; background-color:#fff; box-shadow: 0px 2px 8px rgba(146, 153, 169, 0.5); border-radius:5px; top:50%; left:50%; transform: translate(-50%,-50%);}
+.add-class-box {position:fixed; width:80%; max-width:300px; min-width:240px; font-size:15px; color:#444; background-color:#fff; box-shadow: 0px 2px 8px rgba(146, 153, 169, 0.5); border-radius:5px; top:50%; left:50%; transform: translate(-50%,-50%); -ms-transform: translate(-50%,-50%); -moz-transform: translate(-50%,-50%); -webkit-transform: translate(-50%,-50%); -o-transform: translate(-50%,-50%);}
 .add-class-tip {padding-top:1.2em; padding-bottom:.5em; font-weight:400;}
 .class-number-input {width:80%; max-width:240px; height:28px; border:1px solid #ccc; padding-left:5px; margin:0 auto; display:block;}
 .cancel-btn {width:49%; height:37px; line-height:37px; text-align:center; vertical-align:middle; border-top:1px solid #ccc;}