Dirt is moving on a new $15 million shopping center coming to west Orange County. Orlando-based Keator Construction LLC is moving forward with work on Westside Shoppes, a 70,700-square-foot retail complex being developed on Winter Garden Vineland Road in Horizon West by Unicorp National Developments Inc. and Project Finance & Development LLC. The project features seven retail buildings, labeled Building A-G, and Keator Construction is still accepting bids on nearly all trades, a spokesman said.…