Django 4 Support

What's Changed

• ugettext is deceprated since django 3.0 and removed in 4.0 by @dunkelstern in #3

Full Changelog: 1.0.1...1.0.2

1.0.1

Changes

• Don't switch flags on FCMDevice model via FCM_USE_SESSION_USER setting

  the checks are still applied if the FCM_USE_SESSION_USER setting is enabled but are not enforced by the model (for now)

1.0.0

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