SuccessChanges

Summary

  1. Restores deleted @TransacionAttribute annotations (details)
Commit 878dbdaff0f02c3920960b6892a00ef1cea0b07b by agjacome
Restores deleted @TransacionAttribute annotations
Previous commit mistakenly deleted some required annotations. Moreover,
one more that was not present is required, and it has been added now.
The file was modifiedservice/src/main/java/es/uvigo/esei/dgss/letta/service/UserEJB.java
The file was modifiedservice/src/main/java/es/uvigo/esei/dgss/letta/service/EventEJB.java