~muirrum/comortas

Add contributing instructions
Ignore XML files from data directory
Add challenge parser
Add CI status to README
Format with black
Implement Flask-Security
Add black formatter
Implement Flask-Security

Lays foundation to implement better security for views and tournaments
Implement tournament deletion
Add match scores model and migration
Add default content to base template
Move config into separate file
Add templates
Update models
Add profile sections
Add license
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