[3] As a user I want to manually mark articles as read or unread to filter between seen and unseen articles.

Description

The user should be able to manually switch the read-status of an article. He should be able to set this via the context menu of the article.

ToDo

• Add an entry to the context menu to toggle the property value

Acceptance criteria

• Triggering toggle change case of property
• Current status of the property is displayed on the view

Effort

3