Wrong url fix

According to YouTube Api documentation "for users who have accounts
that are connected to Google+, the (display) attribute value will be
the user's full public display name", not the YouTube username. This
causes wrong url links for Google+ users.

For example, using "TonightAliveBand" as user generates http://www.youtube.com/user/Tonight%20Alive insetad of http://www.youtube.com/user/tonightaliveband

This fix resolves the issue.