Changes

tsk37 Data validation for team views
Was added validations for edit and add team views. Now all fields are 
required, numeric fields has validators that checks that the values are 
only numbers and positives. The email validator checks that the email 
has a valid format. The phone must be only numbers and 9 length. The
views style was modified to unify with other developers. For search
teams, a new field for description was added and this change and this
change caused that it was necessary to modify the associated method in
TeamManagedBean.