fixed OneToMany relation between competitions and teams.  Each team can only belong to one competition.  Adding a team to a different competition automatically removes it from any previously entered competitions.  May consider letting teams enroll in simultanious competitions in the future
fixed OneToMany relation between competitions and teams.  Each team can only belong to one competition.  Adding a team to a different competition automatically removes it from any previously entered competitions.  May consider letting teams enroll in simultanious competitions in the future