German translation updated.
Merge pull request #2018 from Phylon/patch-2

Updated German translation
Updated changelog
Warn for stack overflow (debug info)
Update min pro version
Use constant for heart rate sensor
Remove some to do's
Updated FAQ
Updated Japanese translation
Merge pull request #2020 from t61p/japanese-translation

Updated Japanese translation
Updated changelog
Updated French translation

Better description
Merge pull request #2021 from tonymanou/patch-1

Updated French translation
Updated changelog
3.4 stable
Fixed warning 'Native call method'