Fixed a few bugs, enabled UsefulBuf library optimizations

src/components/ble/NimbleController.h

@@ -71,6 +71,9 @@ namespace Pinetime {
       Pinetime::Controllers::AlertNotificationService& alertService() {
         return anService;
       };
+      Pinetime::Controllers::WeatherService& weather() {
+        return weatherService;
+      };
 
       uint16_t connHandle();
       void NotifyBatteryLevel(uint8_t level);