Merge branch 'master' of edugit.org:Teckids/BiscuIT/BiscuIT-ng

apps/official/BiscuIT-App-Alsijil

apps/official/BiscuIT-App-Chronos

apps/official/BiscuIT-App-Exlibris

apps/official/BiscuIT-App-SchILD-NRW

apps/official/BiscuIT-App-Untis

biscuit/core/templates/core/data_management.html

biscuit/core/templates/core/edit_group.html

biscuit/core/templates/core/edit_person.html

biscuit/core/templates/core/group_full.html

biscuit/core/templates/core/groups.html

biscuit/core/templates/core/person_full.html

biscuit/core/templates/core/persons.html

biscuit/core/templates/core/persons_accounts.html