Version 2.6.4
Typo...
Update strings.xml

Fixed missing translations and fixed poor translation of the text in version 2.6.4
Merge pull request #192 from Eric850130/patch-4

Update strings.xml
Updated Russian translation
Merge pull request #193 from romashko/master

Updated Russian translation
Updated Japanese Translation
Merge pull request #194 from WedyDQ10/patch-9

Updated Japanese Translation