CMUpdater: RU translation update

Change-Id: I400df015b1ab4e0ba9d28087db73836212aa395f
Fix NPE in case previous attempt to download changelog was unsuccessful.

Change-Id: I8a3f4617ab003b6bf64550bd7a11a84ffdca8465
Merge remote-tracking branch 'cm/cm-10.1'; commit 'HEAD' into HEAD