fix: feedback not allowing valid emails

Closes #349

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

@@ -46,7 +46,8 @@
         [(ngModel)]="author.email"
         type="email"
         name="email"
-        pattern="[A-Za-z0-9._%+-]{3,}@[a-zA-Z]{3,}([.]{1}[a-zA-Z]{2,}|[.]{1}[a-zA-Z]{2,}[.]{1}[a-zA-Z]{2,})"
+        ngModel
+        email
       ></ion-input>
     </ion-item>
     <ion-item>
@@ -55,10 +56,13 @@
       }}</ion-label>
       <ion-textarea
         [(ngModel)]="message.messageBody"
-        placeholder="{{ 'feedback.form.message.placeholder' | translate }}"
+        placeholder="{{
+          'feedback.form.message.placeholder'
+            | translate: {number: MINIMUM_MESSAGE_SIZE}
+        }}"
         name="message"
         required="true"
-        minlength="30"
+        minlength="{{ MINIMUM_MESSAGE_SIZE }}"
         autoGrow="true"
       ></ion-textarea>
     </ion-item>