Merge pull request #6 from shaolin405mi16/develop

Japanese l10n fix
Merge pull request #7 from shaolin405mi16/develop

* yet another Japanese l10n fix
Updating ja Mainmenu.xib including latest @shaolin405mi16 fixes
Enabling sandbox in AudioMateLauncher app, etc.
Bumping version to v2.0.4
Updating CHANGELOG.md for v2.0.4 release
* add missing Japanese string