Updated UbuntuOne RPMS for Fedora 17

I've just uploaded new UbuntuOne packages into the yum repo. They're based on the 3.0 stable branch, which is the current version in Ubuntu 12.04 Precise Pangolin. There are no major visible changes, except that the GUI is now based on QT instead of GTK. This should also hopefully fix the authentication issues that showed up lately, by the way.