Merge topic 'IntroduceNewBoxAndBagPlots' into pv-master

957dddda Merge topic 'FixBlackBoxPlot' into master
01bade26 Merge topic 'Segfault_PlotBox' into master
23d97ae3 Fix black box plots issue.
b3470426 BUG: CreateDefaultLookupTable crashes if Input is NULL.
dd6ee504 Merge topic 'FixBagPlotLegend' into master
e0911e4c Fix bag plot legends.
af6d034e Merge topic 'EnhanceBagPlot' into master
39efc956 Enhance bag plot API to allow specify line and points properties.
e83fc65f Merge topic 'vtkweb-improvement' into master
a8f89050 Fix vtkweb catalyst css
1caadcd1 Merge topic 'vtkweb-error-handling' into master
fa652b66 Add error function to vtk:mouseInteraction RPC
0c34a2e4 Merge topic 'Coverage_MultiThreshold' into master
f3311d5c ENH: Coverage for MultiThreshold.
fb15ddf3 Merge topic 'vtkweb-improvement' into master
c3957363 Various VTK-web improvement
...