Link to new vdb in references output
Update VDB url
Fix bug in output
Merge branch 'vdb_intergration'

Conflicts:
	lib/common/models/vulnerability.rb
	spec/lib/common/models/vulnerability_spec.rb
	spec/lib/common/models/wp_item_spec.rb
	spec/lib/common/models/wp_plugin_spec.rb
	spec/lib/common/models/wp_theme_spec.rb
	spec/lib/common/models/wp_version_spec.rb
Update url