Qt5WebKitWidgets was not deployed since Qt5WebKit always matched
the library name.

Change-Id: I2bf7268cb2b9db4bf3daf97657c1baf635224e07
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Reviewed-by: Kai Koehne <kai.koehne@digia.com>