Merge branch '839-authorized-applications-spawns-mini-aleksis' into 'release-3.0'

aleksis/core/frontend/app/dateTimeFormats.js

...s/authorized_oauth_applications/AuthorizedApplication.vue

.../authorized_oauth_applications/AuthorizedApplications.vue

...onents/authorized_oauth_applications/accessTokens.graphql

...ts/authorized_oauth_applications/revokeOauthToken.graphql

aleksis/core/frontend/messages/en.json

aleksis/core/frontend/routes.js

aleksis/core/schema/__init__.py

aleksis/core/schema/oauth.py

...re/templates/oauth2_provider/authorized-token-delete.html

...sis/core/templates/oauth2_provider/authorized-tokens.html

aleksis/core/urls.py