Core & SystemUI: RU translation

Translations imported from CM10.2 and revised.
Also includes plurals' fix, for a greater justice.

Change-Id: I3d3e52b1bd76b0bb467e6e15b38b5940f6eb6a09

Conflicts:

	core/res/res/values-ru/cm_strings.xml
	packages/SystemUI/res/values-ru/cm_strings.xml

(cherry picked from commit d520623d40dd3fc9c27c37118925cf4001e5c372)
Revert "MediaDrm#mNativeContext is a long, not int."

This reverts commit f0daefe2084db09c7bccc39ad6139ca753b3f409.

Change-Id: I9fd6593870548c9032a447853bd466f9250cd1fa
(cherry picked from commit ccb929d7b147a559170e778be3c79522bffffbbf)
Fix duplicate RU translations

(cherry picked from commit 8493899573b7aa381226688ca83256013bba5c78)