Allow one sponsoring to target multiple teams#264

Draft

sibbl wants to merge 4 commits intodevelopfrom features/401-global-challenges

+241-170

Commits on May 16, 2022

Start implementing ManyToMany relation between Sponsoring and Team
Sebastian Schubotz
committed
Fix SQL migration
Sebastian Schubotz
committed
Renamve sponsoring_team to sponsoring_teams as required by hibernate
Sebastian Schubotz
committed
Fix hibernate startup issues
Sebastian Schubotz
committed