Update messages_es.properties

Commit 60a84b8935
Fix some bugs
Merge pull request #319 from AlfredoRamos/patch-1

Update messages_es.properties
Revert "Minimize the debug information for FFMpeg thumbnail creation"

This reverts commit 0c8b0b2986021a281f04349f98565d7adc10a9d4.

This hopefully resolves #260
Revert "Center the auto update dialog to the main UMS window"

This reverts commit fe3129598e6c51cee113512aca866c01a2b58694.

This partially caused the bug that breaks automatic updating on Windows, reported by several users at http://www.universalmediaserver.com/forum/viewtopic.php?f=3&t=1879
Attempt to fix memory leak (thanks, rme!)

Mentioned here http://www.universalmediaserver.com/forum/viewtopic.php?f=14&t=1886
Set a more realistic bandwidth limit for wireless connections when using automatic settings
Added a warning note for the future