#75 Add datepicker

1. Add datepicker files and import to layout.jsp
2. Add lazy jquery initialization
3. Alteration of equipment form/list layout
4. add datepciker to equipment form
5. Alteration of ChangeLocaleController so it receive the lenguage and the country ( so it will find messages_pt_BR, it was not working )
6. Remotion of messages.properties, it was duplicated with messages_pt_BR