Fixes problems rergarding issues similar to #360

Now when using subgenerators, the version of JHipster used is the one,
the main project was generated with.

This way new changes in the generator in newer versions don't interfere
with the use of subgenerators on projects using the older generator
Bumped the version number in the fix to 0.16.0
Merge branch 'master' into fix-generator-update-configuration
Use the version number of the package.json for the dependency
Merge pull request #362 from derLukers/fix-generator-update-configuration

Fix generator update configuration