Agence France-Presse: Jefferson Karr was ready to return to Liberia. He had wound down the management school he ran in Ghana, given away the computers and planned his trip home. Then came Ebola. Now Karr is in limbo, along with many of his compatriots in the Buduburam refugee camp, 35 kilometres (22 miles) west of Ghana’s capital, Accra. Ebola has killed more than 5,000 people, mostly in Guinea, Liberia and Sierra Leone, and is expected to hit economic growth in the region, as border closures and stigma disrupt the…