Merge branch 'feature/coupon' into release/180420

@@ -380,6 +380,7 @@ class BuyNowController {
     selectCoupon(req, res) {
         let headerData = headerModel.setNav({
             navTitle: '选择优惠券',
+            myConponPageNavBtn: true,
             navBtn: false
         });
 

@@ -335,6 +335,7 @@ exports.orderSub = (req, res, next) => {
 exports.selectCouponsPage = (req, res) => {
     let headerData = headerModel.setNav({
         navTitle: '选择优惠券',
+        myConponPageNavBtn: true,
         navBtn: false
     });