Initial commit

doc/urls for graphics.txt

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+user serverside events for all updates, from the first message
+the client id can be retrieved
+
+localhost:8000/update
+
+get the actual data for the chart:
+
+localhost:8000/graph?variables=tt,treg.set.reg&time=-1800,0&id=<client-id>
+
+activate updates for chart:
+
+localhost:8000/graphupdate?id=<client-id>
+
+
+Start without main and blocks:
+
+localhost:8000/?sg=1&sm=0&sc=0