Fix model attribute for shared editions

What does this mr do?

New shared editions could not be created since the allAttributes attribute did not exist in /editions

Actions taken to fix bug

Added allEditions to /editions and removed it from /home

Does this MR meet the acceptance criteria?

• I have added a changelog entry to reflect the significant changes I made and the bug I fixed. - Was not a bug in prod, therefore none required.
• A test was created to test the bug.
• I have updated the documentation accordingly.
• I adhere to the style guide.