Adds device_id in the admin

tournaments/admin.py

@@ -21,7 +21,8 @@ class CustomUserAdmin(UserAdmin):
             'clubs', 'country', 'phone', 'licence_id', 'umpire_code',
             'summons_message_body', 'summons_message_signature', 'summons_available_payment_methods',
             'summons_display_format', 'summons_display_entry_fee', 'summons_use_full_custom_message',
-            'match_formats_default_duration', 'bracket_match_format_preference', 'group_stage_match_format_preference', 'loser_bracket_match_format_preference',
+            'match_formats_default_duration', 'bracket_match_format_preference', 'group_stage_match_format_preference',
+            'loser_bracket_match_format_preference', 'device_id'
         ]}),
         ]
     add_fieldsets = [