A feminist fairy tale that celebrates nerdy-girl power. The character “Rey” in “Star Wars: The Force Awakens.”(Photo: Lucasfilm) The Force Awakens is a lot of things: fun, flashy, elegant — and a multimillion dollar “I told you so” to every little boy who said girls like me couldn’t be Jedi knights. The seventh installment in the Star Wars saga, poised to surpass Avatar as the top-grossing film in North America, contains all the sass, swashbuckling…