fix #617 change new go file and go library menu,delete some useless options,and move them to NewGroup group

fix #617
 
![image](https://cloud.githubusercontent.com/assets/1107541/4516475/f5c0c8e2-4bf8-11e4-8c2f-5f01c2f370cc.png)

![image](https://cloud.githubusercontent.com/assets/1107541/4516478/058f7124-4bf9-11e4-9a89-d4f71c063f82.png)