JERSEY-1549: Helloworld-webapp (and possibly all other) sample is broken

 - fixed samples
 - enabled injection of @PersistenceUnit (see internal package in jersey-servlet-core) outside of EJB container
 - enabled URI as @PathParameter value
 - ignored bookmark-em tests (until Jersey doesn't support @ManagedBean)

 - org.glassfish:javax.ejb -> javax.ejb:javax.ejb-api
 - javax.annotation:jsr250-api -> javax.annotation:javax.annotation-api
   - reversed - e2e tests (on jdk6) are failing (because of the jdk version) when new api jar is used
   - new api jar is present only in bookmark-em sample now

Change-Id: I2f05490f678c4f2c59155a350789d8c8ce0edbc0