Update Prestashop.gitignore

Prestashop.gitignore

@@ -7,8 +7,10 @@ config/settings.*.php
 # The following files are generated by PrestaShop.
 
 admin-dev/autoupgrade/
-/cache/
-!/cache/index.php
+/cache/*
+!cache/index.php
+!/cache/*/
+/cache/*/*
 !/cache/cachefs/index.php
 !/cache/purifier/index.php
 !/cache/push/index.php