Missing defines in WaspSensorCities_PRO.h

[rfontagne]

In case when WaspSensorCities_PRO.h file is called from multiple files, some classes in this file do not respect the classic protection such as:
#ifndef CLASSNAME_H
#define CLASSNAME_H
...
#endif

The line with #define CLASSNAME_H is missing for classes noiseSensor (line 121), bmeCitiesSensor (line 158), ultrasoundCitiesSensor (line 187) and luxesCitiesSensor (line 213)