I have found out that it's possible to import vcard files by opening it through a file manager on the N9 or through the N9's search program. However, there's no option to import actual vcard files in the contacts app. There is however an option to export contacts in the contacts app. By going to contacts app and tapping the options menu, you'll see export, tap that and you'll see two options: to sim or to file.

Unfortunately, I'm still running into trouble importing ics calendar files.
When I open the file on the N9, it just opens a random event imbedded in the ics file and that's it. It still won't go further than that. It still doesn't show my new calendar imported into calendar app.