Changes

Summary

1. update friendship entity with comments (details)
2. [sto31,tsk106] adds extract information ejb method for friendship (details)
3. [sto31,tsk103/104] updates with comments (details)
4. [sto32,tsk106] fixes updates tests (details)
5. [sto31,tsk103] fixes updates tests (details)
6. [sto31,tsk102] adds friendships dataset (details)

Commit f863bab0c057e5f02d7cdd26e8b1fa853db898d7 by redouane update friendship entity with comments
	domain/src/main/java/es/uvigo/esei/dgss/letta/domain/entities/Friendship.java (diff)
Commit fad6997a24db90e38dc9a88a71a11bb63cabd946 by redouane [sto31,tsk106] adds extract information ejb method for friendship
	service/src/main/java/es/uvigo/esei/dgss/letta/service/EventEJB.java (diff)
Commit a01d000089ae13020e6f02050a2c22985b9e8e56 by redouane [sto31,tsk103/104] updates with comments
	service/src/main/java/es/uvigo/esei/dgss/letta/service/UserEJB.java (diff)
Commit ff2dcccaec6c46b92ac8d2a2cbbf1d6906807503 by redouane [sto32,tsk106] fixes updates tests
	service/src/test/java/es/uvigo/esei/dgss/letta/service/EventEJBTest.java (diff)
Commit f93dbe645263bcb3e02a9247a707a25c0c4ca88f by redouane [sto31,tsk103] fixes updates tests
	service/src/test/java/es/uvigo/esei/dgss/letta/service/UserEJBTest.java (diff)
Commit 02f6f80d0698572afcef405474e1a901c157790c by redouane [sto31,tsk102] adds friendships dataset
	tests/src/main/resources/datasets/friendships-uses.xml (diff)