When using source archive, the git repository is not available, so the
git build number plugin should not be used.

Thanks to Lars Næsbye Christensen for the translation.

This simplifies for example getting the time derivative of the momentum.

The ICRF frame as well as Frames related to Earth-Moon barycenter and to
Solar System barycenter are all algned with GCRF and not EME2000.

Fixed in test and tutorial.
Fixes issue #370

These frames can be defined for any pair of celestial bodies.

The new interface for ForceModel has been taken into account.

Conflicts:
	src/main/resources/assets/org/orekit/localization/OrekitMessages_de.utf8
	src/test/java/org/orekit/errors/OrekitMessagesTest.java

Pavel Bludov authored Nov 26, 2017 and Luc Maisonobe committed Nov 26, 2017

Github: fixes #18

Roman Ivanov authored Nov 26, 2017 and Luc Maisonobe committed Nov 26, 2017

Github: fixes #17

Thanks to Espen Bjørntvedt

Thanks to Roberto Alacevich.

Thanks to Lucian Bărbulescu