Update Russian websites (#3469)

* category-gov-ru: remove a domain that doesn't belong to a federal city

The domain belongs to the energy company Sapsan Energia.
http://sev.ru/about/

* category-travel-ru: add Othello

The Othello domain is on Sber's list.

* category-bank-ru: add a comment

* mailru-group: add a missing mail.ru email domain

* category-travel-ru: add Fasten

* mailru-group: update comments

* mailru-group: update comments

© My.com, myMail

* category-travel-ru: update Otello

* category-travel-ru: update Otello

* category-bank-ru: add Gazprom ID

data/category-travel-ru

@@ -10,6 +10,11 @@ avtovokzaly.ru
 # Ostrovok
 ostrovok.ru
 
+# Othello / Otello from 2GIS and Sber
+2gis.ru
+otello.ru
+sber.ru
+
 # Public transport and ticketing
 include:mosmetro
 full:bilet.nspk.ru
@@ -32,3 +37,4 @@ full:arenda.yandex.ru
 
 # Yandex Taxi
 full:taxi.yandex.ru
+fasten.ru