Pro-Palestinian activists who have been occupying rooms at Berlin’s Humboldt University since Wednesday plan to stay until their demands are met, a representative told dpa. The students had been given a deadline by the university to leave by 6 pm (1600 GMT) on Thursday, university president Julia von Blumenthal said. However, they plan to negotiate an extension of the occupation with the university management during talks planned for the afternoon, the spokeswoman told dpa on Thursday. Activists occupied several rooms at the Institute of Social Sciences at Humboldt University on Wednesday in s…