ArborParser: new function collapseArtifactualBranches to remove terminal branches whose end node is tagged with "not a branch".
CircuitGraphPlot: anatomy prunes away artifactual branches whose end nodes are tagged with "not a branch".
CircuitGraphPlot: anatomy must cache Arbor functions after prunning branches.
CircuitGraphPlot: added measurement of "Cable of main dendritic shaft"

Computed using the cable length of all nodes with 0.9 * max centripetal flow centrality.
Merge branch 'master' of github.com:acardona/CATMAID
WebGLApplication: fix error in coloring by own-reviewed.