Updated italian translation to 2.5.6

Updated italian translation to 2.5.6
Updated Japanese Translation
Merge pull request #127 from pitone02/patch-6

Updated italian translation to 2.5.6
Merge pull request #128 from WedyDQ10/patch-1

Updated Japanese Translation
Bring back battery percent text preference in MTK Battery Stats
Removing the preference seems to be causing crash of Battery Stats on
some devices.
Revised functionality:
Percent text will be visible when it is set either in GB or in Battery
stats.
Preference in battery stats has higher priority this means when it is
enabled there, option in GB will be disabled.
Updated SK and CZ translations
Updated Portuguese (PT) translation
Merge pull request #129 from bgcngm/master

Updated Portuguese (PT) translation
Version 2.5.7
Updated Chinese (Traditional) translations (thanks to Eric850130)
Updated Russian translation
Merge pull request #130 from romashko/master

Updated Russian translation
Updated German translations (thanks to samsonbear)
Update strings.xml

No Updata!
Merge pull request #131 from liveasx/patch-1

Update strings.xml
Updated Chinese Translations To 2.5.7

Updated Chinese Translations To 2.5.7
Merge pull request #133 from liveasx/patch-3

Updated Chinese Translations To 2.5.7
Added Vietnamese translations (thanks to hdbk1986)
Updated German translations (thanks to samsonbear)
TorchService: changed ID of ongoing notification