Fix spelling
Allow a user (profile) to be linked to a sponsor
Started to work on a badge / ticket export
Add badge export option
Add sponsor to export
Fix JSON encoding error
Add export command to CLI and support indenting of the JSON
Minor fixups
Merge branch 'develop' into feature/badge-export
Merge branch 'develop' into feature/badge-export
Improve badge exporting and add flags for speaker, trainers, etc.
Merge pull request #136 from EuroPython/feature/badge-export

Allow ticket export for badge generation