Add latest resources and rework repository page

Missing new endpoints

• WorkflowTask
• Converts endpoints: even if they will not be easily callable; we need them to be visible.

Rework repository page
The goal of the review is to have a more usable page. As we want to showcase our API, we'll do not show only document property when navigating through the tree.
The new page will have two parts:

• the left one: that help user to build a request (with WebAdapater, ContentEnricher, headers) based on the selected verb (GET / PUT / POST / DELETE)
• the right one: display last executed request URL + same tabs as in the endpoint part.

We could also expose some command endpoints in the left tab.

The idea is also to have some placeholder like "Document thumbnail", "breadcrumb", "acls?"; that are only visible only if the response contains them.
The placeholder must specify what the user can do to have it enable.