simple-adblock: update to 1.9.4-1

simple-adblock: update to 1.9.4-1

* update default config for new oisd.nl lists
* conf.update file to migrate oisd.nl lists to the new format
* introduce AdBlockPlus lists support (new oisd.nl format)
* longer wait for WAN up/gateway detection
* make load_environemnt only execute once to suppress duplicate
  warnings/errors

PS. While I was testing this, oisd.nl has brought back the old domains
    lists as well, so this version supports both as I'm unclear as to
    why the "big" ABPlus list is only 6.2Mb where as the "big" domains
    list is whopping 19.9Mb.

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