[feature]zekai&zhihao: move create job view to jobs module

1. move create-job file to jobs/views/new-job.jade
2. change the routes naming rules following [visionmedia/express-resource]
[feature]zekai&zhihao: integrate static page form with backend router
[feature]zekai&zhihao: add express-validator to dependence
[feature]zekai&zhihao: add validation for create job & fix tests

1. fix all tests
2. remove customize error message format for validatior cause it's the same as default
3. change remove useless logs