Collision fix

to test, take two meshing nodes with Commotion 1.0, each advertising a single app. Upgrade both with a build including these changes, keeping the settings. The luci-commotion-apps uci-defaults script should update the UCI section name for each application.

Next, on node A, create a NEW application with the same URI as the app on node B. Node B should accept the new app from node A, and not overwrite its local app.

includes https://github.com/opentechinstitute/commotion-feed/pull/49, https://github.com/opentechinstitute/commotion-service-manager/pull/9