Code formatting.
Update to latest versions.

Spring 3.1.0 -> 3.1.1
Spring Data JPA 1.0.3 -> 1.1.0
Maven Surefire Plugin 2.4.3 -> 2.10
Maven Compiler Plugin 2.3 -> 2.5.1
Hsqldb 1.8.0.10 -> 2.2.8
Querydsl APT Plugin 1.0 -> 1.0.3
Querydsl 2.2.5 -> 2.6.0
Hibernate 3.5.6 -> 4.1.4
SLF4j 1.6.1 -> 1.6.6
AspectJ 1.6.8 -> 1.6.12
Joda Time 1.5.2 -> 2.1
Project version 1.1.0
Upgrade Querydsl APT plugin to 1.0.4.
Upgrade to Spring 3.1.3.RELEASE and Spring Data JPA 1.2.0.RELEASE.
Added integration test for saving Accounts.
General project polish.

Upgraded to latest Spring and JUnit releases. Fixed dependency setup.
Added Sample project to show how to set up interceptors for repositories.
Upgraded to latest dependencies.

- Spring Data JPA 1.2.0.RELEASE -> 1.3.1.RELEASE
- Spring 3.2.0.RELEASE -> 3.2.2.RELEASE
- Hibernate 4.1.4.Final -> 4.1.9.Final
- Slf4j 1.6.6 -> 1.7.1
Added additional assertions regarding the AuditingEntityListener.
Fixed JavaDoc in UserRepository.
Dependency upgrades.

Spring 3.2.2 -> 3.2.3
Hibernate 4.1.9 -> 4.2.2
Slf4j 1.7.1 -> 1.7.5
Log4j 1.2.16 -> 1.2.17
Joda Time 2.1 -> 2.2
Hamcrest 1.1 -> 1.3
Spring Data JPA 1.3.1 -> 1.4 M1

Maven compiler plugin 2.5.1 -> 3.1
Upgraded Maven APT plugin to 1.0.8.
Added sample to show usage of Spring's caching abstraction alongside Spring Data repositories.
Cleaned up the UserRepository interfaces imports.
Removed the eclipse plugin configuration.