Add a new Spring Boot menu item and a home page with some basic information about the running Spring Boot app, such as version, uptime, pid, and installation folder.

Requirements document:
https://docs.google.com/a/redhat.com/document/d/1BMGxDfyFpEE8i_hJ-ZOAxevZtro31NqpecOSIVldLWg/edit?usp=sharing