+ demonstrations for use of mocks
+ add back in intermediate Spring integration test

The test makes sure that we provide a `defaultvalue` in `@RequestParam`.
! only require mockito-core instead of -all

This avoids classpath conflicts that result in
“NoSuchMethodError: org.hamcrest.Matcher.describeMismatch”
http://stackoverflow.com/questions/7869711

mockito-all brings its own hamcrest.
+ project name independent of folder