The build number and git ref now be injected in to the packaged war at build time.
This is so that deployed wars can be traced back to a particular war on jenkins.

It is implemented using environment variables which are easily available on jenkins.
There has also been some refactoring around the display of various build/env/version parameters on the front-end.
Removed <br> tags from build info comment
Added Portal build info comment to landing page for consistency with main Portal pages. ie. you will find the comment in the same place regardless of which page you viewed source from.
Merge pull request #1320 from aodn/build_number_in_war

The build number and git ref now be injected in to the packaged war at b...