Allow pasting in preference dialog

[daften]

Now pasting doesn't work (on Mac OS X), this would be handy for the access token and potentially also for the URL. There also isn't a save button, but also nothing that shows the access token is actually valid, so a type can be very annoying.

[daften]

Wrong project, too many tabs open, my apologies :)

[kriskbx]

Haha, no worries. 😄