Changes

Task 11 Fixes error with certain queries and several improvements more
A message that shows when there isn't any results has been added. The
pagination has been changed to a model where the redirection/pagination
is performed via javascript. CSS has been applied to the no results
message. A modification has been applied to the method count() of
eventEJB since the returning value was not the one expected.The affected
tests were upgraded and an additional test was added.