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216 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
Fix missing thumbnail on xfdesktop when thumbler fails to create it. Need check if exist thumbnail file before emit THUMBNAIL_READY. Seems that thumber not returns the full path. So xfdesktop assumes two directories. Checked to see if the file exists in the first folder but not the second!.
Additional temp files to ignore
Fix display desktop file that include extension in icon name..

Signed-off-by: Eric Koegel <eric.koegel@gmail.com>
Change behaviour to behavior (Bug 8746)