Add FlexMeasures plugins, USEF protocol, and Cariflex simulator

- flexmeasures-entsoe: ENTSO-E data plugin
- flexmeasures-weather: Weather data plugin
- USEF Flex Trading Protocol PDF (2.4MB)
- Cariflex simulator (publishes to Redis)
- Dashboard Grafana updated with correct InfluxDB queries
- All tools extracted in /tools/

tools/flexmeasures-entsoe/run_mypy.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+set -e
+pip install mypy
+# We are checking python files which have type hints
+files=$(find . -name \*.py -not \( -path "./venv/*" -prune \) -not \( -path "./.eggs/*" -prune \) )
+
+mypy --follow-imports skip --ignore-missing-imports $files