review unsafe commands access

Some commands were made unsafe in old versions, but nowadays they can be
run without having special privileges.

There was also a bug in which status commands were not available if you
are not ahriman user and unix socket is used. It has been fixed by
switching to manual socket creation (see also
https://github.com/aio-libs/aiohttp/issues/4155)

package/share/ahriman/settings/ahriman.ini

@@ -65,4 +65,5 @@ debug_check_host = no
 debug_allowed_hosts =
 host = 127.0.0.1
 static_path = /usr/share/ahriman/templates/static
-templates = /usr/share/ahriman/templates
+templates = /usr/share/ahriman/templates
+unix_socket_unsafe = yes