(This Oct. 13 story has been corrected to clarify the circumstances under which companies in the EU can ban religious signs, including headscarves.) By Foo Yun Chee BRUSSELS (Reuters) – EU companies can ban the visible wearing of religious signs, including headscarves, if the rules apply to all workers, the European Union’s top court said on Thursday, the latest ruling on an issue that has divided Europe for years. However, it said that if one religion is effectively discriminated against by the ban then companies may need to demonstrate to a court that there is a legitimate need for it. The r…