TrackMate number parsing

This branch is an attempted fix for [an issue reported on fiji-devel](https://groups.google.com/d/msg/fiji-devel/MHG5CuktXdI/5CTbJBhJtbsJ).

It also fixes some dependency problems with TrackMate's POM.

Could someone with a non-US locale please test? Ideally, someone who uses commas as the decimal separator for numbers... Thanks!