Fix iconurl

[jcfr]

In the extension CMakeLists.txt,

http://www.slicer.org/slicerWiki/index.php/File:ModelClipIcon.png should be changed into http://www.slicer.org/slicerWiki/images/b/bd/ModelClipIcon.png

After fixing the issue(s), make sure to regenerate the corresponding extension description file and submit a pull request against both master [1] and 4.3 [2] branch on the ExtensionsIndex.

[ Also notifying @pieper of this issue ]

[1] http://www.slicer.org/slicerWiki/index.php/Documentation/Nightly/Developers/Tutorials/Contribute_Extension_Description_File#Extensions_build_against_Slicer_trunk_2

[2] http://www.slicer.org/slicerWiki/index.php/Documentation/Nightly/Developers/Tutorials/Contribute_Extension_Description_File#Extensions_build_against_Slicer_4.3_2

[jcfr]

Hi,

Is there any update on this ?

Thanks
Jc

[jcfr]

xref Ting-Jia/ModelClip#1