Ensure org-mode on, when exporting

[sg2002]

Export from buffer does not work if org-mode is not on for that buffer, even if it's contents are valid.

It's a very minor issue, but if I got caught by it, somebody else would too.

[flexibeast]

Ah. That explains this. Thanks for the catch; i'll fix the relevant export functions accordingly.

[flexibeast]

Fix applied. Could you please verify that the fix works for you?

[sg2002]

Worked for me.

[flexibeast]

Thanks!