ELIAS BIRYABEREMA The Ugandan military yesterday sentenced seven soldiers to 90 days in jail after they were convicted of assaulting journalists who were covering an event outside a U.N. office in the capital Kampala. Punishment of security personnel for abuse against journalists is rare and attacks on reporters have escalated in recent months amid a crackdown on supporters of opposition leader Bobi Wine. On Wednesday, soldiers descended on a group of journalists outside the U.N. High Commissioner of Human Rights office, beating and injuring at least 20 of them. NTV Uganda television showed the journalists running for safety and screaming…