In downtown Fond du Lac, the saying everything old is new again couldn't be more true about the building that sits on 183 South Main Street.Sam Meyer, the owner, says it will certainly be a change from what used to be in the building."It's been a tavern or a bar since it was built in the late 1800's, so over one hundred forty years as a local saloon or tavern, a lot of history in this building," Meyer said.Meyer says that once the project is com…