MEDIUM: stats: add support for soft stop/soft start in the admin interface

One important missing feature on the web interface is the ability to perform
a soft stop/soft start. This is now possible.
diff --git a/include/types/proto_http.h b/include/types/proto_http.h
index a287c35..3457a2a 100644
--- a/include/types/proto_http.h
+++ b/include/types/proto_http.h
@@ -262,6 +262,8 @@
 	ST_ADM_ACTION_NONE = 0,
 	ST_ADM_ACTION_DISABLE,
 	ST_ADM_ACTION_ENABLE,
+	ST_ADM_ACTION_STOP,
+	ST_ADM_ACTION_START,
 };
 
 /* status codes available for the stats admin page */