Add a TODO

design_notes/TODO

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+- Display UI
+- Editing UI
+	- Moving nodes
+	- Add nodes which were not in reference map
+		- Both custom and autodetected
+- Underlays (draw the network on top of a map
+- Analysis functions:
+	- display DRs and BDRs
+	- show shortest path trees
+	- find bridges and articulations (single points of failure)
+- Shortcutting (hide/contract some networks for clarity)
+- Support for displaying other data (e.g. link utilization, link type)