Issue #3047201 by super_romeo: Migrate Issue

Merge pull request #212 from r-daneelolivaw/8.x-1.x

Fix typo in 'administer messages' permission

Merge pull request #204 from kevin-dutra/203-too-many-in-queue-item

#203 Too many messages per deletion queue item

Merge pull request #201 from kevin-dutra/199-entity-delete-target-type

#199 - Incorrect messages deleted after entity delete.

Merge pull request #172 from Axolotlke/fix-typo

Fixed typo in message after bulk deletion of messages.

Merge pull request #169 from Gizra/core-version

Update version of core for testing

Merge pull request #162 from mikran/partials-FormattableMarkup

HTML formatting is lost when delivering the message to user inbox.

Merge pull request #144 from geertvd/remove-changed-token

Remove changed token

Merge pull request #138 from Gizra/123-disallow-delete

Do not allow templates that are in use to be deleted.

Merge pull request #134 from jhedstrom/133-entity-properties

Remove entity keys from class declaration.