b156f4bf8c
Show recent directories in a separate fragment, and save as serialized versions of new DirectoryStack. Cleaner behavior around recents and search, instead of treating them as pseudo-Documents. More uniform item layouts between list and grid, including both date and size information, and originating storage root in recents. Avoid clashing directory loaders by assigning unique numbers. Promote list/grid switching up into activity. Change-Id: I9a93460b896067ca036d7e772eeabde31face2e1