Messagebar fixes

[gallayl]

Store

• [x] Refactor message bar storage
  • [x] Persist message details in the store (full event detail dump)
  • [x] Repository events should be updated in the store not in a component
  • [x] Action subscriptions should be extended in an easy way

    MessageBar component

• [x] Refactor message bar component
  • [x] Remove explicit message parsing / localization logic
  • [x] Allow message grouping by type and dismissing
  • [x] Allow multiple snackbars per message type

    Localization

• [x] add bulked localization messages for well-known actions (success and failure)