Norwegian mass murderer Anders Behring Breivik appeared in court on Monday on the first day of a fresh bid to sue the state over his prison conditions. The sports hall of Ringerike prison has been converted into a temporary courtroom. Judge Birgitte Kolrud declared the proceedings open, according to the NTB news agency. The provisional courtroom will be used for the second time since 2017 to determine whether Norway has violated the 44-year-old’s human rights in the way he has been detained. The Oslo District Court has scheduled five days of hearings up to and including Friday. Breivik detonat…