Move BrooklynAppUnitTestSupport from software/ core/
Extend BrooklynAppUnitTestSupport in core tests
This closes #7
Adds docs for Brooklyn persistence
Fix typo in hyperlink anchor reference
Merge branch PR #37 with fix

This closes PR #37.
This also includes an extra commit which fixes a broken link.
Conditional wrapping of YAML app.

When loading YAML with a single application in the services list don't
create a wrapper application, use the one from the services list.
To explicitly force wrapping use custom attribute "wrapApp: true".