clean code formating

* remove tabs

Change-Id: Ia320088b9a7e0817002c4c6468272d5d61098c62
replace preferences with listviews

PS2: revert german translation edits and bump to version 1.6.4
PS3: revert chinese translations
PS4: fix derp

Change-Id: I8eca358d73009803951cf0217376dd4cd1b4caf0
Fix string typo

Change-Id: Id3f400652dc841fa3909aad7b69e2590adf29222
Signed-off-by: Lokesh Chamane <lokesh.c703@gmail.com>
Merge pull request #2 from PAC-man/pac-4.4

update pacperformace for lollipop