Long a fixture in the small Shaw rowhouse at the corner of 9th and N Streets NW across from the Convention Center, the Long View Gallery has moved a half block south to the larger-than-life, newly renovated 5000 square foot building owned by Douglas Development at 1234 9th Street NW. This Thursday, the gallery marks their grand opening with a celebratory gala and artists salon featuring many of the tried-and-true D.C. area artists who often…