emails/password_reset: Refactor and replace no_account_in_realm.

In place of no_account_in_realm we will use its negation
active_account_in_realm as a part of refactoring this template.

templates/zerver/emails/password_reset.source.html

@@ -1,8 +1,14 @@
 {% extends "zerver/emails/compiled/email_base_default.html" %}
 
 {% block content %}
+    {% if active_account_in_realm %}
+    <p>
+        Psst. Word on the street is that you need a new password, {{ email }}.<br />
+        It's all good. Click here and we'll take care of the rest:<br />
+        <a class="button" href="{{ reset_url }}">Reset password</a>
+    </p>
+    {% else %}
     <p>
-    {% if no_account_in_realm %}
         Someone (possibly you) requested a password reset email for {{ email }}
         on {{ realm_uri }}, but you do not have an
         active account in {{ realm_uri }}.
@@ -23,12 +29,8 @@
             organization; you can try logging in or resetting your password there.
             {% endif %}
         {% endif %}
-    {% else %}
-        Psst. Word on the street is that you need a new password, {{ email }}.<br />
-        It's all good. Click here and we'll take care of the rest:<br />
-        <a class="button" href="{{ reset_url }}">Reset password</a>
-    {% endif %}
     </p>
+    {% endif %}
     <p>
         Thanks,<br />
         Your friends at Zulip HQ

templates/zerver/emails/password_reset.txt

@@ -1,4 +1,10 @@
-{% if no_account_in_realm %}
+{% if active_account_in_realm %}
+Psst. Word on the street is that you need a new password, {{ email }}.
+
+It's all good. Follow the link below and we'll take care of the rest:
+
+{{ reset_url }}
+{% else %}
 Someone (possibly you) requested a password reset email for
 {{ email }} on {{ realm_uri }}, but
 you do not have an active account in {{ realm_uri }}.
@@ -15,12 +21,6 @@ However, you do have an active account in the {{ active_accounts[0].realm.uri }}
 organization; you can try logging in or resetting your password there.
 {% endif %}
 {% endif %}
-{% else %}
-Psst. Word on the street is that you need a new password, {{ email }}.
-
-It's all good. Follow the link below and we'll take care of the rest:
-
-{{ reset_url }}
 
 {% endif %}
 Thanks,

zerver/forms.py

@@ -241,14 +241,14 @@ class ZulipPasswordResetForm(PasswordResetForm):
             endpoint = reverse('django.contrib.auth.views.password_reset_confirm',
                                kwargs=dict(uidb64=uid, token=token))
 
-            context['no_account_in_realm'] = False
+            context['active_account_in_realm'] = True
             context['reset_url'] = "{}{}".format(user.realm.uri, endpoint)
             send_email('zerver/emails/password_reset', to_user_id=user.id,
                        from_name="Zulip Account Security",
                        from_address=FromAddress.tokenized_no_reply_address(),
                        context=context)
         else:
-            context['no_account_in_realm'] = True
+            context['active_account_in_realm'] = False
             active_accounts = UserProfile.objects.filter(email__iexact=email, is_active=True)
             if active_accounts:
                 context['active_accounts'] = active_accounts