Merge branch '715-managed-model-instances' into 831-data-management-for-the-model-room

CHANGELOG.rst

aleksis/core/frontend/app/apollo.js

aleksis/core/frontend/components/app/App.vue

aleksis/core/frontend/components/app/LanguageForm.vue

aleksis/core/frontend/components/app/SideNav.vue

...sis/core/frontend/components/app/systemProperties.graphql

aleksis/core/frontend/components/app/whoAmI.graphql

...ntend/components/celery_progress/CeleryProgressBottom.vue

...re/frontend/components/notifications/NotificationList.vue

aleksis/core/frontend/index.js

aleksis/core/frontend/messages/ru.json

aleksis/core/frontend/messages/uk.json

aleksis/core/frontend/mixins/menus.js

aleksis/core/frontend/mixins/permissions.js

aleksis/core/frontend/mixins/routes.js

aleksis/core/frontend/plugins/aleksis.js

aleksis/core/frontend/routes.js

aleksis/core/locale/ru/LC_MESSAGES/django.po

aleksis/core/managers.py

.../core/migrations/0049_alter_activity_managers_and_more.py