Changes

Summary

1. [sto12,tsk45] Adds the method to unattend an event and the corresponding (details)

Commit fea176d301d3e62ea993f8d5191b74623c452f99 by igpereira [sto12,tsk45] Adds the method to unattend an event and the corresponding button in JSF.
	service/src/main/java/es/uvigo/esei/dgss/teama/letta/ejb/UserEJB.java (diff)
	jsf/src/main/java/es/uvigo/esei/dgss/teama/letta/jsf/HomeController.java (diff)
	jsf/src/main/webapp/index.xhtml (diff)