DATACMNS-301 - Upgraded to Querydsl 3.0.0.

Removed explicit version declaration and inherit it from the current snapshots of the parent build (see https://github.com/SpringSource/spring-data-build/issues/5). Upgraded to version 1.0.8 of the APT plugin as well.
DATACMNS-299 - Default scope of CDI repository beans to application scope.

Polished JavaDoc along the way.