Use real json as output

[En3rGy]

Use json.dumps(...) to output today and tomorrow json. This will lead to valid json strings instead of strings containing ' instead of " and showing the u for unicode representation.

replace
self.help.set_output_sbc(self.PIN_O_PRICE_JSON_TODAY, priceinfo['today'])\ .set_output_sbc(self.PIN_O_PRICE_JSON_TOMORROW, priceinfo['tomorrow'])

by

self.help.set_output_sbc(self.PIN_O_PRICE_JSON_TODAY, json.dumps(priceinfo['today']))\ .set_output_sbc(self.PIN_O_PRICE_JSON_TOMORROW, json.dumps(priceinfo['tomorrow']))