Merge pull request #50 from caok/master

need ffaker to seed db for production
Merge pull request #51 from caok/master

change the type of comment in orders
Merge pull request #52 from caok/master

fix the bug of ckeditor in production
add evaluation model #37
fixed evaluations with type and update seeds
37 add evaluation to order
update evaluation to mutiple types #37
update evaluation_type to enum #37
add evaluate for order #37
add rate for evaluate #37
add review to evaluate page #37
add evaluation to personal #37
modify the location of images