adblock: release 3.0

adblock: release 3.0

* add kresd & turris omnia support
* add dnscrypt-proxy support
* change start priority to 30, to fix possible trigger issues on slow
booting hardware
* simplify suspend/resume handling (no longer use a hideout directory)
* enhanced LuCI frontend
* many small changes & improvements
* default config change (please update your config!), adblock is now
disabled by default
* documentation update

Signed-off-by: Dirk Brenken <dev@brenken.org>