After much pain, managed to get Tomcat 7 running on ECH's laptop with the Moses app inside it. Tomcat 8 will not run it; need to investigate that.
Meanwhile, we discussed visualizations and as a result I worked on generating data for a force-directed graph of the shared morphemes between elements all containing a specific morpheme. The example morpheme had 66 entries in addition to itself, and there 545 edges, so the result was painfully slow in the browser and not very revealing. However, it might be useful for less common morphemes.