refactor: make feedback protocol data optional

Closes #356

src/app/modules/feedback/feedback-page.html

@@ -67,9 +67,13 @@
       ></ion-textarea>
     </ion-item>
     <ion-item>
-      <ion-label class="ion-text-wrap">{{
-        'feedback.form.termsAgree' | translate
-      }}</ion-label>
+      <ion-label class="ion-text-wrap"
+        >{{ 'feedback.form.termsAgree.0' | translate }}
+        <a [routerLink]="['/about/privacy']">{{
+          'feedback.form.termsAgree.1' | translate
+        }}</a
+        >.</ion-label
+      >
       <ion-checkbox
         color="primary"
         slot="start"
@@ -77,13 +81,17 @@
         name="termsAgree"
       ></ion-checkbox>
     </ion-item>
-    <ion-button
-      type="submit"
-      color="primary"
-      expand="block"
-      [disabled]="!feedbackForm.valid || !termsAgree || submitSuccess"
-      >{{ 'feedback.form.submit' | translate }}</ion-button
-    >
+    <ion-item>
+      <ion-label class="ion-text-wrap">{{
+        'feedback.form.protocolDataAgree' | translate
+      }}</ion-label>
+      <ion-checkbox
+        color="primary"
+        slot="start"
+        [(ngModel)]="protocolDataAgree"
+        name="protocolDataAgree"
+      ></ion-checkbox>
+    </ion-item>
     <ion-card>
       <ion-card-title>
         <ion-button expand="block" fill="clear" (click)="toggleShowMetaData()">
@@ -99,5 +107,12 @@
         <pre>{{ metaData | json }}</pre>
       </ion-card-content>
     </ion-card>
+    <ion-button
+      type="submit"
+      color="primary"
+      expand="block"
+      [disabled]="!feedbackForm.valid || !termsAgree || submitSuccess"
+      >{{ 'feedback.form.submit' | translate }}</ion-button
+    >
   </form>
 </ion-content>