Merge pull request #5 from habibvirji/WP-123-certifcate-parsing

 Certificate and CRL parsing
Fixed LNK2005 error

Node.h exposes v8 and avoid duplicate definitions. certificate_manager was using node.h while openssl_wrapper v8.h, thus the duplicate definition of the v8 staff.

Jira: WP-833
Merge pull request #6 from andreasbotsikas/fix-build-windows

Fixed LNK2005 error
Signed certificate variable exposed in PZP

Jira Issue: WP-1024