change user_billing to daily from monthly
finish the daily billing
refactoring and optimizations of the model
rename some classes to be more intuitive
improved naming of resource_pricing and calculators
refactor the ceilometer client
fix failing tests
user_billing to project_billing and migrations
fix everything after renaming stuff
rename command bill_users to  bill_projects
improve style
more refactoring
more refactoring
refactor cronjob and ceilometer stats format
Merge pull request #19 from kili/daily_billing

Daily billing, looks good