Add thumbnailerUrl only if need (url not empty)
Merge pull request #1 from Segr/develop

* The “$.fn.mm_widget_showimagetvs” plugin has been updated to 1.0.2:
	* “thumbnailerUrl” is used only if the src of an image is not empty.
	* URLs of images are now always absolute (even if “thumbnailerUrl” is set).