Edina-based Prime Alliance Solutions Inc. has been sold to Mortgage Cadence, a Denver company that serves the financial services industry. Prime Alliance provides mortgage technology to the credit union industry. The combined companies have about 150 employees, the Denver Business Journal reports. Both companies are privately held and terms of the deal were not announced. Trevor Gauthier, Mortgage Cadence executive vice president, said Prime Alliance will continue to use that name for now. “We…