Refactor part 1

{{url}}/api/v1/courses/getCourses =>  {{url}}/api/v1/courses/all
{{url}}/api/v1/groups/getCourseGroups?id=13 => {{url}}/api/v1/groups/course/13
{{url}}/api/v1/courses/getCoursesWithGroups => {{url}}/api/v1/courses/all?groups=true
{{url}}/api/v1/commisions/add => {{url}}/api/v1/commisions/user
{{url}}/api/v1/commisions/getAllCommisions => {{url}}/api/v1/commisions/user
{{url}}/api/v1/assignments/getCurrentAssignments =>{{url}}/api/v1/assignments/user
{{url}}/api/v1/users/searchForStudents => {{url}}/api/v1/users/search

Signed-off-by: Marcin Woźniak <y0rune@aol.com>

restservice/src/main/java/com/plannaplan/controllers/AssignmentsController.java

@@ -32,7 +32,7 @@ public class AssignmentsController extends TokenBasedController {
     @Autowired
     private AssignmentService assignmentService;
 
-    @GetMapping("/getCurrentAssignments")
+    @GetMapping("/user")
     public ResponseEntity<List<GetCurrentAssignmentsResponse>> getCurrentAssignments() throws Exception {
         User user = this.getCurrentUser().orElseThrow(() -> new NullPointerException("User not found"));
         Optional<Commision> com = this.commisionService.getNewestCommision(user);