I have been trying to add access to a custom app directly in the content editing page in the manager. I have tried a few ideas but don’t seem to be getting anywhere with this. I tried using jQuery to inject the app (a-la ManagerManager) but that did not work, and I tried including it but keep getting errors and it is interfering with the content editing functions (and conflicting with other add-ons). Figured this out, it was a stupid mistake on my part.
The ultimate objective is to add a stand alone AJAX app in a new tab in the content editing screen so that I can edit data related to the document on the same interface as the actual document.
Edit: I am still trying to work out the AJAX part of the equation but I think I am on the right track.