docs(admin): Update + automate ordering of Configuration chapter

Make sure the following are always first:

- "Using the occ command"
- "Configuration Parameters"
- "Warnings on admin page"
- Then include everything else left automatically (without require this index be updated for every new section any longer)
- Automatically alphabetize included sections

Signed-off-by: Josh <josh.t.richards@gmail.com>

admin_manual/configuration_server/index.rst

@@ -4,26 +4,9 @@ Nextcloud configuration
 
 .. toctree::
    :maxdepth: 2
+   :glob:
 
    security_setup_warnings
    occ_command
-   activity_configuration
-   caching_configuration
-   background_jobs_configuration
    config_sample_php_parameters
-   email_configuration
-   external_sites
-   language_configuration
-   logging_configuration
-   antivirus_configuration
-   dashboard_configuration
-   reverse_proxy_configuration
-   bruteforce_configuration
-   automatic_configuration
-   text_configuration
-   theming
-   oauth2
-   admin_delegation_configuration
-   domain_change
-
-.. Intentional disabled antivirus_configuration
+   *