TrackMate: update to latest ImgLib2 API

The ImgLib2 API changed from 2.0.0-beta-9 to 2.0.0-beta-15. The
imglib2-meta component was created, and ImgPlus (and HyperSliceImgPlus)
moved there. The CalibratedSpace API also changed.
gitignore: add more JARs