Create mindbox (#3433)

* mindbox: created new list

* category-ads: added mindbox

* category-ru: included mindbox

* category-companies: included mindbox

* mindbox: updated tracking section

data/category-ru

@@ -10,9 +10,10 @@ include:category-medicine-ru
 include:category-retail-ru
 include:category-travel-ru
 
-# Well-known companies
+# Russian companies
 include:kaspersky
 include:mailru-group
+include:mindbox
 include:yandex
 
 # Bank & Finance & Insurance & Securities