Generalize VS dependency reference in GSL template.
Revert use of $(DefaultLinkage) in VS props that require UI presentation.
Merge pull request #486 from hintjens/master

Problem: signal handling was broken
Update NuGet packaging.
Merge pull request #487 from evoskuil/master

Minor updates to VS build configuration and NuGet packaging.
Code simplifications
Removed debug output in zbeacon