Metadata++

* added sort types (file type extension, author) * added Nikon VRInfo, Nikon Custom tags * added XMP DarwinCore (modifiable) * added XMP- Drone-Parrot, XMP-Camera_1_, XMP-Camera * MP3 tags are now partially writable * added MPF0 * added some FUJIFILM tags * added MetaIFD tags * added batch Geotagging * fixed DjVu reading * added parameters to Export * export mp3 * added XMP Analog-Exif, XMP-M, XMP-XSI * added Exports parameters and some few import