Version beta11

Support is now automatically deleted, when interest is deleted

All tables dealing with delegations now contain a column scope (including table delegation)

Changes in fields related to notify_email of member

Policies can now specify larger majorities to be reached (e.g. 2/3)

New column agreed in table initiative to mark, if initiative has reached majority specified by policy

Minor bugfix in constraint non_admitted_initiatives_cant_contain_voting_results of initiative table

Function delete_private_data() no longer deletes invite codes, which have been already used

Removed view battle_participant

Added index on opinion (member_id, initiative_id)