Add a user field specifically for XMPP, because it needs to be handled a little differently to the user profiles (different mf2 property, stuff like that)

users/admin.py

@@ -19,7 +19,7 @@ class ProfileInline(admin.TabularInline):
 
 class UserAdmin(BaseUserAdmin):
     fieldsets = BaseUserAdmin.fieldsets + (
-        ('Profile', {'fields': ('avatar', 'note')}),
+        ('Profile', {'fields': ('avatar', 'xmpp', 'note')}),
     )
     inlines = (
         KeyInline,

users/migrations/0009_user_xmpp.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.7 on 2017-11-06 10:59
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('users', '0008_auto_20171031_1357'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='xmpp',
+            field=models.EmailField(blank=True, max_length=254),
+        ),
+    ]

users/models.py

@@ -33,6 +33,8 @@ class Site(models.Model):
 class User(ModelMeta, AbstractUser):
     avatar = models.ImageField(upload_to=avatar_path)
     note = models.TextField(blank=True)
+    xmpp = models.EmailField(blank=True)
+
     # This is gonna need to change if I ever decide to add multiple-user support ;)
     url = '/'