[story#011][xuhao and xuxiaojuan]:fix the alert bug in register.js
Merge https://github.com/tw-preschool/letusgo-team-c

merge the new conflict
[xuhao and xuxiaojuan]:fix the function that allow the redirection to admin page every where after admin login
[story@015][xuhao and xuxiaojuan]: change the table custom_infmroation and add the shoping list information coloum
[story#0015][xuhao]:complete the function that customer can see their own shoppinglist
[xuhao and xuxiaojuan]:merge the conflict from zhangxu and fix some page problem
[xuhao and xuxiaojuan]: merge the conflict about the title erb file and new migrate file
[xuhao and xuxiaojuan]:fix title