[aur-general] Merge request: various gtk-theme

Hi everyone, here's another list of packages to be merged (always former into the latter): https://aur.archlinux.org/packages/gnome-theme-airlines/ into https://aur.archlinux.org/packages/gtk-theme-airlines/ https://aur.archlinux.org/packages/gnome-theme-ellanna/ into https://aur.archlinux.org/packages/gtk-theme-ellanna/ https://aur.archlinux.org/packages/gnome-theme-showtime/ into https://aur.archlinux.org/packages/gtk-theme-showtime/ https://aur.archlinux.org/packages/gnome-theme-step-into-freedom/ into https://aur.archlinux.org/packages/gtk-theme-stepintofreedom/ https://aur.archlinux.org/packages/gnome-theme-ubuntu-sunrise/ into https://aur.archlinux.org/packages/gtk-theme-ubuntusunrise/ Thanks, Edoardo