serve: quick & dirty hack to fix JSON output for 'channels' command

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Merge branch 'master' of github.com:mkrufky/libdvbtee into teev-qt
teev: slap together an ugly listbox for channel changing

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>