Merge pull request #16 from phillipoertel/upgrade-with-initializer

Added automatic loading of a page initializer function.
Added MIT License
Removed csrf protection as it is not really needed and disturbs some actions, e.g. backup and deleting items
Re-enabled deleting payments
Re-enable category assignments
Fixed graph issues: Values were not displayed
Fixed subcategory toggle in accounts overview. 

The list of items definitely contains too many items, but I don't think this is a JS problem …
Merged current upgrade branch