Big commit:

make some changes to profile to provide an interface for a student to manage his courses.

implements the submission of exemptions request

frontend/src/rest/ServiceInscription.js

@@ -3,7 +3,7 @@
  *
  * TODO: On time of writing, the backend doesn't support these endpoints so it could be modified in the future.
  */
-import {restGet, restPatch} from './restConsumer.js'
+import {restGet, restPatch, restPost} from './restConsumer.js'
 
 /**
  * create a new register requests that can be recovered by the registering service