Fix call to process from updater

## Updater on manage.py
The updater uses the process function to call all stages that need updates
The process function changed on Dec 23 2012:
https://github.com/okfde/offenesparlament.de/commit/c6f895eac2bac343359d7c34c5d0d0fed6af358b
The process function does not accept the engine anymore

### Removed
Removed the engine
### Changed
changed the call to the the process function
### Added
Added a debugger log to make display which stage is complete.