Fixes #867

Fixes #653

Fixes #848

Anne-Laure did most of the work to add more informative messages when
root finding for event detection fails. This commit adds a few polishes.
- Added Anne-Laure Lugan as a contributor
- Updated messages to print g values to full precision.
- Made try {} as small as possible since catch() is so broad
- Fix checkstyle warnings
- Add test to check message is formatted correctly

Improve exception messages with AbsoluteDates by including the duration
between the dates. Many messages updated, some new messages added.

Part of #825

Fixes #809

Fixes #782

This change is for consistency with Orekit conventions.

The parser should handle poperly some funny specifications like:

 MHz, km/√d, kg.m.s⁻¹, µas^(2/5)/(h**(2)×m)³, km/√(kg.s)

The launch year, launch number and launch piece should be retrieved from
object identifier only. If the identifier is not there or cannot be
parsed, we should not set up data that was in fact never present in the
file.