DEBORA PATTA CBS January 15, 2015 "It's As If The World Has Forgotten Us" JOHANNESBURG, South Africa -- #BringBackOurGirls. Remember that hashtag? The social media campaign that accompanied global outrage over Boko Haram's abduction of more than 200 Nigerian schoolgirls on the eve of their final exams went viral almost instantly. That was nine months ago. The girls have not been seen since and it appears the world is suffering from what one commentator called "collective amnesia." But for the people of Nigeria, there is no such thing as the luxury of forgetting and moving on. Hardly a week goes...