adblock: release 4.4.4-1

adblock: release 4.4.4-1

* major feed cleanup, removed the following default feeds:
   - adaway, unmaintained for more than 2 years
   - easylist/easyprivacy, not effective for DNS-based ad blocking plus too many false positives
   - energized_*,  broken
   - lightswitch05, abandoned
   - notracking, abandoned
   - openphish, not effective for DNS-based ad blocking plus too many false positives
   - reg_*, not effective for DNS-based ad blocking plus too many false positives
   - winhelp, unmaintained for more than 2 years
* update the utcapitole categories
* automatically migrate the hagezi categories via uci-defaults script to the new format
* the adblock status now includes the backend- and frontend version information
* small performance improvements
* LuCI: no longer call the logread binary, use rpc / the ubus log object instead
* LuCI: various code cleanups
* LuCI: various small usability improvements
* readme update

Signed-off-by: Dirk Brenken <[email protected]>