Add playconf/ example app with postgresql DB
WIP: Models DB persistence
Update plugins to play 2.2.2

.git ignore updated
Instantiate model collections, add getters and setters and evolution
Merge branch 'persistence' of github.com:feeeermendoza/we-work-with-mammograms into persistence
Add Guice for DI
Stable test environment with some JUnit and ScalaTest examples
Staff logging in integration test
Attributos de Staff

turuurur
Setters & getters Staff
Merge branch 'test/setting-up' into persistence
Merge branch 'persistence'

Conflicts:
	.gitignore
	app/controllers/Application.java
	conf/routes