- Fix compile problem for older QT versions on QDateTime back to toTime_t
- Alert and warning timer is only started when at least one action is selected
- Add time to mouseover of the sensor graph
- Changed graph to solid line instead of scattered
The reason is that openweathermap has an update period of 60 secs. And other than the WeatherSimulator does not initially update the sensor values but waits for the update period until the values are read for the first time.