Fix vtkWeb loader dependancy order

Change-Id: I52eec38cd0c3a56ebb1ee21d17b4522c512766ff
Fix vtkWeb file widget relative path info

Change-Id: Iee8860c8b16335ae8aa2a183d856bc992ab8cdba
Add smarter connect method that take care of URL parameters

Change-Id: Ie203b35e055e86783c570bf256b585bb25dadc62
Merge topic 'vtk-web-improvement' into master

367c7d08 Add smarter connect method that take care of URL parameters
a4241fe6 Fix vtkWeb file widget relative path info
d6ff0a3c Fix vtkWeb loader dependancy order
ENH: Update selected Filters/Core to support DesiredOutputPrecision

This updates selected filters to support a choice of desired precision
(default, single, or double) for output points. It uses the analogous
code in vtkThreshold as a model.

Change-Id: I9b32888f83aadb4dce61b22ea42d763e14f3b5a0