added costcenters template, view and url handler and added link to profile
added model and form for adding costcenters
added costcenter model to admin
added description in costcenters
made cost center name unique
cost centers for logged in user are displayed
improved layout of costcenter template
added todo in views to clean up data
workingn on form and model validation for cost centers
added has-error class to form fields with error
readded sqlite to gitignore
Finished feature costcenter.