Browser: add duckduckgo search enginge to RU locale

Requested in JIRA CYAN-3875

Change-Id: Ia3fcf0f491958111660ada41b9bbeae73f8ac27c
Signed-off-by: Roman Birg <romanbirg@gmail.com>
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0