[fix] Fix the issue alias_traversal (#45)

* Fix the issue alias_traversal

https://github.com/yandex/gixy/blob/master/docs/en/plugins/aliastraversal.md

* Update fix alias_traversal

* Don't change original nginx conf file and add change_url

* Use newest version of ynh_add_nginx_config from #462
No more need to deal with "#sub_path_only"

* Revert "Use newest version of ynh_add_nginx_config from #462" as it's not released (and subject to discussions)!

This reverts commit fac62c49ff.

* Fix indentation

scripts/upgrade

@@ -83,6 +83,11 @@ ynh_setup_source "$final_path"
 
 # Create a dedicated nginx config
 ynh_add_nginx_config
+if [ "$path_url" != "/" ]
+then
+	ynh_replace_string "^#sub_path_only" "" "/etc/nginx/conf.d/$domain.d/$app.conf"
+fi
+ynh_store_file_checksum "/etc/nginx/conf.d/$domain.d/$app.conf"
 
 #=================================================
 # CREATE DEDICATED USER