acardona/CATMAID — pull request #737 by aschampion (2014-08-22 15:41:52+00:00)
Title: Add node between existing nodes on the active skeleton with alt-click

This adds the ability to ALT+click in empty space when in skeleton tracing to insert a new node along the edge of the active skeleton nearest the cursor, as requested in acardona/CATMAID#684. Submitted as a PR since this is new functionality and there may be comments about interface or implementation.