update fec admin version

composer.json

@@ -25,7 +25,7 @@
   "require": {  
     "php": ">=5.4.0",
     "yiisoft/yii2": ">=2.0.11" ,
-    "fancyecommerce/fec_admin":">=1.3.6.6",
+    "fancyecommerce/fec_admin":">=1.3.6.7",
     "yiisoft/yii2-mongodb": "~2.1.0" ,
     "skeeks/yii2-assets-auto-compress": "*",
     "hightman/xunsearch": "*@beta"