Log Message:
cliqz: Update to 1.28.2

DIST_SUBDIR no longer contains version suffix to prevent distfiles clutter.

Changes since 1.28.1:

* DB-2245: merge with Firefox 68.0.2
* DB-2245: Update to 1.28.2
* DB-2250: fixed about dialog license link
* DB-2247: fix texts on Profile Downgrade dialog
* DB-2246: fallback to textValue as url value