Add nexpose_config to vuln_update()

The (largely unused) nexpose vulnerability db import view added nexpose_config to its view but this variable was never sent to the view processor. It is now!
Merge branch 'master' of https://github.com/KvasirSecurity/Kvasir
Replace modal of vulndata edit with vulndata_edit page.
Merge branch 'vulnedit_fix' of github.com:grutz/Kvasir into vulnedit_fix