use new password widget in login form (#25045)

This commit also modify AuthenticationForm to remove explicit loading of
authentic2/js/js_seconds_until.html from login_password.html.

src/authentic2/forms/__init__.py

@@ -7,6 +7,7 @@ from django.contrib.auth import REDIRECT_FIELD_NAME, forms as auth_forms
 from django.utils import html
 
 from authentic2.compat import get_user_model
+from authentic2.forms.fields import PasswordField
 
 from .. import app_settings
 from ..exponential_retry_timeout import ExponentialRetryTimeout
@@ -157,6 +158,8 @@ def modelform_factory(model, **kwargs):
 
 
 class AuthenticationForm(auth_forms.AuthenticationForm):
+    password = PasswordField(label=_('Password'))
+
     def __init__(self, *args, **kwargs):
         super(AuthenticationForm, self).__init__(*args, **kwargs)
         self.exponential_backoff = ExponentialRetryTimeout(
@@ -200,6 +203,12 @@ class AuthenticationForm(auth_forms.AuthenticationForm):
                 self.exponential_backoff.success(*keys)
         return self.cleaned_data
 
+    @property
+    def media(self):
+        media = super(AuthenticationForm, self).media
+        media.add_js(['authentic2/js/js_seconds_until.js'])
+        return media
+
 
 class SiteImportForm(forms.Form):
     site_json = forms.FileField(label=_('Site Export File'))

src/authentic2/templates/authentic2/login_password_form.html

@@ -19,4 +19,4 @@
 {% endif %}
 </div>
 
-<script type="text/javascript" src="{% static "authentic2/js/js_seconds_until.js" %}" async></script>
+{{ form.media }}