Implement staged model data handlers for blogs entry and apply changes accordingly in BlogsPortletDataHandler

• Type: Technical Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: 6.2.0 CE M5
• Fix Version/s: 6.2.0 CE M5
• Component/s: Staging, Staging > Export/Import
• Labels: None
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/10658

To adapt the blogs portlet to the new staging environment a new BlogsEntryStagedModelDataHandler has to be created.

As a next step changes should be applied to BlogsPortletDataHandler to match the new staging architecture.