Dm 4693 add edit button to PB editor page

[PhilipDeFraties]

JIRA issue link

https://agile6.atlassian.net/browse/DM-4693

Description - what does this code do?

Updates editor/pages config:

1. removes redundant as: "Pages from main block
2. removes config.clear_action_items! - I originally thought that had to be included to remove download buttons
3. removes now-redundant action_item button for new page

Testing done - how did you test it/steps on how can another person can test it

1. As admin or page_group editor visit /editor
2. Verify there is a "New Page" button in the top left
3. For a page click "View"
4. Verify there are "Edit Page" and "Delete Page" buttons in the top left

Screenshots, Gifs, Videos from application (if applicable)

Link to mock-ups/mock ups (image file if you have it) (if applicable)

Acceptance criteria

• [ ]

Definition of done

• Unit tests written (if applicable)
• e2e/accessibility tests written (if applicable)
• Events are logged appropriately
• Documentation has been updated, if applicable
• A link has been provided to the originating JIRA issue
• No sensitive information (i.e. PII/credentials/internal URLs/etc.) is captured in logging, hardcoded, or specs