A federal court has allowed a lawsuit to proceed against a grocery store chain over a hack of its credit and debit card processing systems that allegedly compromised the identity and financial information of some of its customers.   The U.S. District Court for the Southern District Court of Illinois found, in Allen v. Schnuck Markets, Inc., that the plaintiffs had sufficiently alleged losses and damage to state a claim under various state law theories, including negligence, breach of implied contract, and violation of state merchandising statutes and the Illinois Personal Information Protection Act.