Changes

Summary

1. Updates sql scripts and adds createEvent to EventEJB (details)

Commit a3b548b4ceb937402a90e718928d4ce6f5bafccb by ansousa Updates sql scripts and adds createEvent to EventEJB
	service/src/main/java/es/uvigo/esei/dgss/lettab/service/EventEJB.java
	additional-material/db/letta-mysql.test.sql
	additional-material/db/letta-mysql.full.sql