Integrating the DOG web application

[dietervu]

If the input for the LRS is a URI that the profiler recognizes as HTML or CMDI, the DOG app should be added to the list of callable tools, supposed a preflight API check returns that the URI is recognized by the Digital Object Gateway.

Example workflow:

• user enters https://zenodo.org/record/1639549
• profiler recognizes HTML
• profiler sends preflight API call to the DOG REST API with the URI as argument
• the response is positive, the DOG will show up as processing tool
• user selects DOG as processing application
• in the DOG web application, the actual files are shown (in this case PDF), with a button "process in switchboard" (this is based on the DOG's awareness about the Invenio API and a call it has made for the URI)
• user clicks the button and gets redirected to the switchboard with the option to process the PDF