contractor can add hour and sales info for a job
added styling to center main content
fixed link to go to correct job
contractor can upload and view job images
added basic styling and navbar
added factory_girl and factories for each model
added current_contractor helper method
added methods for business statistics"
added routes for images
added index action to jobs
added methods to select each type of image
removed unneeded to_integer method
test for job_expenses method
added image association to job test
added public/uploads to .gitignore
insert add expense form in job show page