Implementación ejb y bean del delete de worker
Freddy y Jose M Villar

Merge del WorkerEjb, WorkerBean y TestCRUDWorker y Refactorización del CRUD de trabajadores
merge
Merge origin/develop into develop

Conflicts:
	src/main/java/eui/miw/pfm/controllers/beans/WorkerBean.java
	src/main/java/eui/miw/pfm/controllers/ejb/WorkerEjb.java
	src/main/resources/META-INF/persistence.xml
	src/test/java/eui/miw/pfm/controllers/ejb/TestCRUDWorker.java