Refactor ProjectService to reset selected application when selecting a project

src/main/java/com/olympus/hermione/services/ProjectService.java

@@ -47,6 +47,7 @@ public class ProjectService {
         User principal = (User) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
 
         principal.setSelectedProject(idProject);
+        principal.setSelectedApplication(null);
         User u = userRepo.save(principal);
         return u;