Update messages_es.properties

Commit c626fbe93b
Merge pull request #328 from AlfredoRamos/patch-1

Update messages_es.properties
Updated changelog
Merge branch 'master' of github.com:UniversalMediaServer/UniversalMediaServer
Formatting
Fixed layout of General tab
If the renderer uses the setting "KeepAspectRatio", do not mux videos automatically with tsMuxeR unless the video is 16/9
Try a different explanation of the KeepAspectRatio renderer setting
FFmpeg fontconfig tooltip