Alteracoes nos modelos de vista no front-end.
Merge branch 'master' of https://github.com/STracker/STrackerServer
Alteracao no web-front.
Merge branch 'master' of https://github.com/STracker/STrackerServer
Correcao do erro ao tentar fazer a media com zero elementos.
Merge branch 'master' of https://github.com/STracker/STrackerServer