Fixed bug: Typo on RequestParam value name

Value name was "id" but on the URL it is "registration".
Signed-off-by: Bruno Nocera Zanette <brunonzanette@gmail.com>

src/main/java/br/ufpr/c3sl/sapos/web/RegistrationController.java

@@ -182,7 +182,7 @@ public class RegistrationController {
     }	
 	
 	@RequestMapping(value = "studentinfo", method = RequestMethod.GET)
-    public String registrationOverview(@RequestParam(value="id", required =true) String id, Model model) {
+    public String registrationOverview(@RequestParam(value="registration", required =true) String id, Model model) {
 		
 	Registration reg = Registration.findRegistration(new Long(id));
 	model.addAttribute("registration", Registration.findRegistration(reg.getId()));