simple-adblock: update to 1.9.1-1

simple-adblock: update to 1.9.1-1

* remove obsolete block-lists from config
* add removal of obsolete lists to config-update
* add AdGuard team's block-list to config
* improve allow command
* improve nftset support
* move config load to uci_load_validate, which required some code refactoring which
  looks dramatic, but isn't
* always use dnsmasq_restart instead of dnsmasq_hup for all dns resolution options
  for dnsmasq

Signed-off-by: Stan Grishin <stangri@melmac.ca>