A Russian film reboot featuring legendary Soviet cartoon character Cheburashka has become Russia’s highest-grossing film of all time, surpassing the first part of James Cameron’s “Avatar” despite only being released two weeks ago, according to statistics published by the Russian Cinema Fund. The total box office from “Cheburashka,” which was released on Jan. 1, has already surpassed 3.5 billion rubles ($50 million) with over 1.3 billion rubles taken in the film’s opening weekend alone. The film, directed by Dmitry Dyachenko, features the eponymous CGI hero Cheburashka, who first appeared on sc…