Merge branch 'feature_student' into release/4.9.1

# Conflicts:
#	apps/activity/controllers/student.js
#	apps/product/views/action/detail/detail.hbs

 'use strict';
 
 const fs = require('fs');
-let devHost = 'localhost';
+let devHost = '172.16.6.159';
 
 fs.readFile('.devhost', (err, buf)=> {
     if (!err) {

@@ -374,7 +374,7 @@
     background-repeat: no-repeat;
     background-size: contain;
     width: 77px;
-    height: 26px;
+    height: 28px;
     line-height: 26px;
     position: absolute;
     right: -87px;