By Charlotte Greenfield KABUL (Reuters) -The Taliban on Wednesday backtracked on their announcement that high schools would open for girls, saying they would remain closed until a plan was drawn up in accordance with Islamic law for them to reopen. The u-turn took many by surprise, leaving students in tears and drawing condemnation from humanitarian agencies, rights groups and diplomats at a time when the Taliban administration is seeking international recognition. Teachers and students from three high schools around the capital Kabul said girls had returned in excitement to campuses on Wednes…