Update Japanese translation

- Add missing translations
- Revise some translations

Change-Id: I2c5467b483840c14036015dba8e39ccfaa31b853
Signed-off-by: rdgate <rdgate@gmail.com>
[3/3] Install persistence support

New fragment to control install persistence settings.

PS3: Rebase

Change-Id: I76600aa38f450954e9a22c1e549502d3a069aae4

Conflicts:
	res/values/strings.xml
	res/xml/preference_headers.xml
RC: show back action arrow in main menu

Change-Id: I1bfee2c094d996d4615a77b84b713d05d0b55edd
Signed-off-by: Jonathan Steadman <xxwhitehawk@gmail.com>