qemu: 'Advanced' also in production
qemu: tabs-config-advanced
Hardware::Serial::ls
qemu: serial: form
css: align checkboxes
qemu: serial: write into config file
qemu: serial: form: highlight selected
qemu: css: superhighlight
qemu: serial: avoid NoMethodError in general view
qemu: "Host serial ports" heading
qemu: README: virt USB pendrive currently disabled
qemu: README.passthrough
qemu: edit cmdline: warn on possibly missing flags
qemu/config: -serial: fix NoMethodError
qemu -serial cmdline args
qemu: fix screendump permissions

(When running as root).
Merge branch 'master' into margay