Put external recommender API in own page

[jcklie]

Describe the refactoring action Right now, the external recommender REST API is a bit hidden in the dev documentation. It would be nice to move it to its own document. Needs changes in inception website.

Expected benefit Make it easier to find for interested people.

[reckart]

@jcklie any idea why this is marked as requiring upstream changes?

[jcklie]

It needs changes in the website repository

[reckart]

Which kind of changes?

[jcklie]

We need to create a dedicated page with a menu item there.