Improve Logic for Opened URL for Royale Application Deployment

[JoelProminic]

When we originally implemented #1080, we defaulted the opened URL to http://127.0.0.1:8080/... to work with the original DominoVagrant configuration. Now that we have switched to demo-tasks (see #1186), We need to support URLs like https://domino.demo.startcloud.com/... instead.

Some options for this:

• Configure the Base URL in the Royale project. This is flexible, but requires manual work.
• Read a baseURL property from the REST interface as part of /info. This requires some updates to the Vagrant configuration and REST interface, but it shouldn't be too hard.