misc: use <button> for buttons (#17847)

fargo/static/fargo/js/fargo.js

@@ -8,16 +8,16 @@ $(function() {
       window.parent.postMessage(JSON.stringify({
               'message': 'fargoButtons',
               'buttons': [
-                  {'text': $('input[name=cancel]').val(),
+                  {'text': $('button[name=cancel]').text(),
                    'name': 'cancel'
                   },
-                  {'text': $('input[name=submit]').val(),
+                  {'text': $('button[name=submit]').text(),
                    'name': 'submit'
                   }
               ]}), '*');
     }
     if (data.message == 'validate') {
-       $('input[name=submit]').click();
+       $('button[name=submit]').click();
     }
   });
 });

fargo/templates/fargo/home.html

@@ -33,7 +33,7 @@
       {% csrf_token %}
       <div style="display: none">
       {{ form.as_p  }}
-      <input type="submit" name="submit" value="{% trans "Upload" %}">
+      <input type="submit" name="submit" value="Upload">
       </div>
       <button>{% trans "Upload a new document" %}</button>
     </form>

fargo/templates/fargo/upload.html

@@ -7,7 +7,7 @@
   <form method="post" enctype="multipart/form-data">
     {% csrf_token %}
     {{ form.as_p  }}
-    <input type="submit" name="submit" value="{% trans "Upload" %}">
-    <input type="submit" name="cancel" value="{% trans "Cancel" %}">
+    <button name="submit">{% trans "Upload" %}</button>
+    <button name="cancel">{% trans "Cancel" %}</button>
   </form>
 {% endblock %}

fargo/templates/fargo/validation.html

@@ -16,8 +16,8 @@
       {% csrf_token %}
       {{ form.as_p  }}
       <div class="buttons">
-        <input type="submit" name="submit" value="{% trans "Validate" %}">
-        <input type="submit" name="cancel" value="{% trans "Cancel" %}">
+        <button name="submit">{% trans "Validate" %}</button>
+        <button name="cancel">{% trans "Cancel" %}</button>
       </div>
     </form>
     <script>

fargo/templates/registration/login.html

@@ -6,6 +6,6 @@
   <form method="post">
     {% csrf_token %}
     {{ form.as_p }}
-    <input type="submit" value="submit" name="{% trans "Login" %}">
+    <button>{% trans "Login" %}</button>
   </form>
 {% endblock %}