text: Title: Feature: Add map view for visualizing connections
  Body: I've seen this requested a couple times in forums, so if someone wants to implement it, it could probably be done with https://plotly.com/python/bubble-maps/ in a new tab with https://dash.plotly.com/dash-core-components/tabs
  
  All the code for the dash is under the function [ui_dash](https://github.com/elesiuta/picosnitch/blob/41af07d770925731d71642ea1ece17b4ca9d39f7/picosnitch.py#L1751) and the connection data is queried from the [sqlite db](https://github.com/elesiuta/picosnitch/blob/41af07d770925731d71642ea1ece17b4ca9d39f7/picosnitch.py#L2060). The location is looked up with [get_geoip](https://github.com/elesiuta/picosnitch/blob/41af07d770925731d71642ea1ece17b4ca9d39f7/picosnitch.py#L1801) for each IP and not stored in the sqlite db.
  
  To help with debugging, you can test it with `DASH_DEBUG=True python3 picosnitch.py start-dash`