Replace tab title "Notes" by "Persons"

(cherry picked from commit 64acfa79)

aleksis/apps/alsijil/templates/alsijil/class_register/lesson.html

@@ -21,7 +21,7 @@
       <li class="tab">
         <a href="#personal-notes">
           <i class="material-icons">people</i>
-          {% trans "Notes" %}
+          {% trans "Persons" %}
         </a>
       </li>
     {% endif %}