Update Japanese translation

Change-Id: I963ed65f18a8ca91b3ddf9b3e4c825f3692b2c9c
Show weekday in timestamp

Change-Id: Id71f46b3c56b58adc8400e833545711655c17e9c
Fix random bubble width bug

Change-Id: I005226d1242379841e255cdfc58c7b2ac3df5b10