People present sensor should always contain positive values

Author: dbrgn

src/server/handlers.rs

@@ -66,7 +66,7 @@ impl ReadHandler {
         }
 
         // Update state depending on number of people present
-        let people_now_present: Option<i64> = status_copy.sensors.as_ref()
+        let people_now_present: Option<u64> = status_copy.sensors.as_ref()
             .and_then(|sensors| sensors.people_now_present.as_ref())
             .map(|people_now_present| people_now_present[0].value)
             .into();