Thus we don't need to change anything to kali-desktop-base. Add bin/kde-symlinks to help generate the symlinks for the KDE wallpapers.
Also move the grub theme to /usr/share/grub/themes/kali/ as installing files in /boot/ is problematic on arm where /boot is often a vfat partition that doesn't support hardlinks as required by dpkg. Gbp-Dch: Full