Fix BackTranslation test Error

There are two tests for BackTranslation added by Sasaki and Xun. Test
added by Xun cause error because the result "i thank you" is not equal
with input "Thank you". I comment Xun's code, keep Sasaki's code
Merge pull request #12 from kemas/master

Update service_list.php
MultiLanguageStudio.phpをMultilingualStudio.phpにリネーム．
close #1  MultilingualStudio.phpを作成した．MultiLanguageStudio.phpはそれへのエイリアスとして残した．