POM: remove unneeded configuration
POM: update to pom-loci 1.15 parent
POM: fix element ordering
POM: tweak whitespace
POM: remove useless picUrl
POM: simplify repositories block
Set license to GPL v3, not BSD

We depend on the SLIM Curve library, which is GPL v3. So by the terms of
the GPL, this library must also be licensed under the GPL v3 or later.
Add missing TODOs
Ignore Eclipse metadata and build directory
POM: use tabs instead of spaces
POM: fix schemaLocation URL