fix html according to https://validator.w3.org/

snippets/scales.html

@@ -6,7 +6,7 @@
     <header class="modal-card-head">
       <p class="modal-card-title">Einstellungen</p>
     </header>
-    <section class="modal-card-body">
+    <div class="modal-card-body">
       <!-- Content ... -->
       <div class="field"> <label id="label" class="label">Bezeichnung</label>
         <div class="control has-icons-right">
@@ -37,7 +37,7 @@
       <div class="is-size-7">
 Device ID: <span id="deveui"></span>
       </div>
-    </section>
+    </div>
     <footer class="modal-card-foot">
       <button id="modal-save" class="button is-success">OK</button>
       <button id="modal-close" class="button">Cancel</button>
@@ -52,7 +52,7 @@ Device ID: <span id="deveui"></span>
       <p class="modal-card-title">Abo verl&auml;ngern</p>
     </header>
     <p id="charge_data" hidden>0</p>
-    <section class="modal-card-body">
+    <div class="modal-card-body">
       <div id="abos_verlaengern">
         <!-- Content ... -->
       </div>
@@ -62,12 +62,12 @@ Device ID: <span id="deveui"></span>
         </div>
         
         <!-- We'll put the error messages in this element -->
-        <article class="message is-danger has-margin-top-20" id="card-errors-article" role="alert">
+        <div class="message is-danger has-margin-top-20" id="card-errors-article" role="alert">
           <div class="message-body" id="card-errors">
           </div>
-        </article>
+        </div>
       </div>
-    </section>
+    </div>
     <footer class="modal-card-foot">
 
       <button id="cart-pay" class="button is-success">Bezahlen</button>
@@ -82,15 +82,15 @@ Device ID: <span id="deveui"></span>
     <header class="modal-card-head">
       <p class="modal-card-title">Info: Bezahlung durchgef&uuml;hrt</p>
     </header>
-    <section class="modal-card-body">
-      <article class="message is-info">
+    <div class="modal-card-body">
+      <div class="message is-info">
         <div class="message-body">
 Sie haben eine Abo Verl&auml;ngerung bezahlt, besten Dank!
 
 Sie erhalten eine E-Mail, sobald die Zahlung erfolgreich abgeschlossen ist.
         </div>
-      </article>
-    </section>
+      </div>
+    </div>
     <footer class="modal-card-foot">
 
       <button id="payment_notifier_close" class="button is-success">Schliessen</button>
@@ -190,9 +190,9 @@ Sie erhalten eine E-Mail, sobald die Zahlung erfolgreich abgeschlossen ist.
 
 {{end}}
 
-<script type="text/javascript" src="https://cdn.jsdelivr.net/momentjs/latest/moment-with-locales.min.js"></script>
+<script src="https://cdn.jsdelivr.net/momentjs/latest/moment-with-locales.min.js"></script>
 
-<script type="text/javascript" src="static/js/scales.js"></script>
+<script src="static/js/scales.js"></script>
 
 {{ else }}
 <h4>Bitte zuerst <a href="login.html">einloggen</a></h4>