Changes

[sto24 - tsk68, tsk69, tsk70, tsk71]Friendship management Added
Friendship entitie Added FriendshipState enum with states of an
friendship Added Friendship test Added Friendship controller for JSF
Added view of my friends Added new resource for tag user Added new
resource for tag friend Added new resource for tag friendOf Added new
resource for tag Friendship recieved Added new resource for tag
Friendship request Added new view for users searched Added new EJB for
friendship entitie Added Friendship dataset for tests Added
IsEqualsFriendship for tests Modified search controler with methods for
search users Modified header.xhtml for to show up new option My friends
Modified UserEJB for search users Modified persistence.xml for add the
new entitie friendship