Japanese : update Japanese translation.

 - Add missing translation entries.

Change-Id: I58c10f0d8b75a5b78c52ccb25e836e0cc78aeb76
DeskClock: Simplified Chinese Translations

Partially ported from CM10.

Patch Set 2: Fix typos.

Patch Set 3: Add keep display on while using stopwatch translations.

Patch Set 4: Revise translations.

Change-Id: I0cd9fa4939b67ceae28f7b47649da3c8c3ba75a7