Create infrastructure for implementing tournament competitions
Merge branch 'tournament'
Intermediary: Tournament functionality and first tests
Intermediary: Adjusted team selection to receive team object instead of just names
Under integration testing: Tournament functionality
Debugging: Print stack trace of exception thrown during extra time score calculation
Intermediary: Adding competitions (current: La Liga)
Adding leagues: currently testing French league integration
Updated samples scores file after data bug fix
Adding leagues: currently testing Russian league integration
Tournaments integrated and tested