Add Vietnamese localization
Added Thai localization courtesy of translator colleague
Added Malay localization courtesy of translator colleague
Added missing comma to Russian localization

Punctuation/grammar fix
Added Brazilian Portuguese localization courtesy of translator colleague
Improved Swedish localization courtesy of translator colleague

The old version says: "If you think [app name] is a useful tool...",
but that doesn't reflect the tone or meaning of the original English
version, and it's not appropriate for games and many other kinds of
apps. The new Swedish version matches the English "If you enjoy using
[app name]..." version.
Merge pull request #145 from pnhoang/master

Add Vietnamese localization
Merge pull request #146 from linguafranca/thai

Added Thai localization courtesy of translator colleague
Merge pull request #147 from linguafranca/malay

Added Malay localization courtesy of translator colleague
Merge pull request #149 from linguafranca/russian

Added missing comma to Russian localization
Merge pull request #150 from linguafranca/brazilian-portuguese

Added Brazilian Portuguese localization courtesy of translator colleague
Merge pull request #151 from linguafranca/swedish

Improved Swedish localization courtesy of translator colleague
Merge branch 'master' of git://github.com/arashpayan/appirater