(Editor’s note: This story contains language in the 4th and 8th paragraphs that some readers may find offensive.) By Michelle Price WASHINGTON (Reuters) – A year ago, office worker Keith Gill shot to global notoriety when his “Roaring Kitty” YouTube persona stoked a trading frenzy with bullish bets that propelled shares of retailer GameStop to eye-popping gains and saddled hedge funds that had bet against the stock with billions of dollars in losses. Gill has returned to obscurity: albeit much richer thanks to his GameStop positions that at one point reached $48 million in value. He no longer …