Wire up new job button in user home page
(red) Add failing routing test +> GET /jobs/new
(green) Make routing test pass => GET /jobs/new
(red) Add failing controller test => JobsController#new sets @j
(red) Add 2 failing model tests => Job validations
(green) Make 2 model tests pass => Job validations
(green) Make controller test pass => JobsController#new sets @j
Create HTML template for new job form