update task switching video for 3.10 looks

https://bugzilla.gnome.org/show_bug.cgi?id=709735
make launching apps video 3.10 accurate

- use the top bar aggregate menu instead of user menu

https://bugzilla.gnome.org/show_bug.cgi?id=709735
update responding to messages for 3.10

https://bugzilla.gnome.org/show_bug.cgi?id=709735
update wallpaper animation for 3.10

https://bugzilla.gnome.org/show_bug.cgi?id=709735
update workspaces for 3.10 top bar

https://bugzilla.gnome.org/show_bug.cgi?id=709735