Volume Tracing: Trace tool pushes, pulls from db correctly
Volume Tracing: JSTree icons
Volume Tracing: Uses ontology (somewhat incorrectly), tracing window widget added
Volume Tracing: Support holes in db, django
Volume Tracing: Basic functionality works
Volume Tracing: Integrated volume tracing with navigator
Volume Tracing: Move brush slider to Area Segment window
Volume Tracing: Respond to key presses
Volume Tracing: Shift + Mousewheel to change brush size
Volume Tracing: Opacity for traces and canvasLayer
Volume Tracing: View Property propagation, buggy probably due to svg in fabricjs
Volume Tracing: Handle opacity and color explicitly rather than svg
Volume Tracing: Close CMWindow on destroy()
Volume Tracing: dynamic PNG icons for trace instances
Volume Tracing: Fix CMWWindow close bug
Volume Tracing: Add divs to CMWWindow to handle Slider and caption
Volume Tracing: Opacity slider