UI: Changed interface

Description of feature

• scene.reviews_properties.linked_directory displayed in Stax menu.
• Workspaces tabs removed.
• Report messages moved to topbar.
• sequencer.update_session added to topbar Session menu.

How to test it

Checklist

Please check if your MR fulfills the following requirements:

• Unit tests have been added, if possible
• Documentation has been updated
• Build was run locally and any changes were pushed
• Lint has passed locally without error
• CHANGELOG.md has been updated

FYI: @awesome_dev_too