As our App of Day, all our regular readers know the trailer for this app will feature on every page of our site for a whole day. Just scroll to the bottom of this page to take a look. Whether you are nostalgic, a photo purist, or have boxes of slides and negatives and have no idea what to do with them, HelloPhoto can rescue your film from dust. Using the various functions of HelloPhoto, you can simply do the following:     •    Use the light table function to view, sort, and photograph your slides and negatives.     •    Use the light table’s adjustments to enhance your slides and negatives before photographing them.     •    Use…