Leginon

Many users are now importing all data after the fact into Warp/Cryosparc/Relion. In general these imports are by alphanumerical order. Because the Leginon system prefixes all presets in the filename in parent order of collection, this puts the grid location earliest in the filename after the grid name, followed by the square number. The square, hole, exposure numbers follow the exact collection order, while the grid number is only based on the geography of collection. This small change removes the NNNNgr from filenames after gr. It would probably be better to have this as a preference in the GUI, but I'm not sure where to put it.