Adds 2D Convex Hull and 2D Skeleton Features plugins to the Feature Selection Dialog.
Fixes an ordering bug in SubFeatures selection dialog ('advanced' keys values were not set).
2D Convex Hull and Skeleton Features:
Adds an implicit check if Vigra supports 2D Convex Hull and Skeleton Features.
Author names are corrected in yapsy files.
Changes except in availableFeatures and the corresponding check for plugins.
Merge https://github.com/ilastikdev/ilastik
Merge pull request #1041 from ilastikdev/master

Adds 2D Convex Hull and 2D Skeleton Features plugins...