COMP: Disable LibSVM as TubeTK doesn't build with it on windows

LibSVM is used in CLIs that aren't useful for prometheus
Merge remote-tracking branch 'githubOrigin/workflow'

* githubOrigin/workflow: (26 commits)
  COMP: Disable LibSVM as TubeTK doesn't build with it on windows
  ENH: Customize json loading to support step parameters
  ENH: Complete/update the ExtractSeeds step
  ENH: Rename ExtractSkeletonStep to ExtractSeedsStep
  ENH: Fix workflow module palette
  BUMP: Bump TubeTk to benefit from CLP fixes
  ENH: Disable auto update of slices when adding new nodes
  ENH: Modify the slice views with the configuration name
  FIX: Clear paint brush on Segmentation step exit
  ENH: Set Slicer Dark Style as default
  ENH: Display only vessely image after enhancement
  ENH: Refactor vessel enahncement step to use the correct cli
  ENH: Add comboboxes for additionnal input parameters to the PDF segmenter
  ENH: Remove unecessary Register widget parameters
  ENH: Create an adaptive layout
  ENH: Improve segmentation Step to allow an easier editing interface
  ENH: Resample step before Register step
  ENH: Collapse the data probe automatically
  ENH: Update Resample Step to handle 1 to 3 inputs
  ENH: Improve icons
  ...
ENH: Rename Prometheus to VesselView