1.6.6
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* WooCommerce: Maintenance tab added to check webhook status.
* Common: Translation issues fixed
* Common: Don't load default CSS feature fixed
* Common: "Client not found" issue fixed

git-svn-id: https://plugins.svn.wordpress.org/paymill/trunk@933622 b8457f37-d9ea-0310-8a92-e5e31aec5664