display locale names in locale language
* New: download subtitle from opensubtitles.org
add subtitle download message in OSD
workaround to parse ill-formed SAMI subtitles(#36)
* Fix: first caption in subtitle view is duplicated
* Fix: remove previous internal subtitles with new playback(#36)
* Fix: 'Apply in fullscreen mode only' for 'Hide mouse cursor' was always checked
* Fix: broken synchronization of app state and menu state