Factored out generic delete view and added invoice delete view
Added deletion of budget items, too
Extra cells where I forgot them
Improved project budget display
Fallback for projects without start or end date
Fixed invoice amount calculation on projects page

Workaround for strange django behaviour:
https://docs.djangoproject.com/en/1.6/topics/db/aggregation/#interaction-with-default-ordering-or-order-by
Fixed logout link
Using lizard-auth-client 0.10: fix for python 3
Shorter dates for invoices also on the project page
Added totals in/exclusive on invoice overview page
Updated changelog
Merge pull request #30 from nens/reinout-last-fixes-for-monday

Reinout last fixes for monday