Disabled display of student name when only one student is in the plan

amd/src/page-coach.js

@@ -105,6 +105,13 @@ export function init() {
             addBrowserButtonEvent(this.navChanged, this.navChanged);
         },
         computed: {
+            studentcount() {
+                let count = 0;
+                for (const group of app.associatedstudents) {
+                    count += group.users.length;
+                }
+                return count;
+            }
         },
         methods: {
             navChanged() {

coach.php

@@ -94,7 +94,8 @@ print <<<END
         </div>
         <div class='t-studyplan-container'>
             <h2 v-if='displayedstudyplan&& selectedstudent'
-                >{{selectedstudent.firstname}} {{selectedstudent.lastname}} - {{displayedstudyplan.name}}</h2>
+                ><span v-if="studentcount > 1">{{selectedstudent.firstname}} {{selectedstudent.lastname}} - </span
+                >{{displayedstudyplan.name}}</h2>
             <h2 v-else-if='displayedstudyplan'>{$text->showoverview} - {{displayedstudyplan.name}}</h2>
             <template v-if="!loadingstudyplan && displayedstudyplan">
                 <r-studyplan v-if="selectedstudent"