Rewrite reactor to source and register it properly to node object

src/specificClass.js

@@ -20,6 +20,7 @@ class Reactor {
    * @param {object} config - Configuration object containing reactor parameters.
    */
   constructor(config) {
+    this.config = config;
     // EVOLV stuff
     this.logger = new logger(undefined, undefined, config.general.name);
     this.emitter = new EventEmitter();
@@ -122,7 +123,7 @@ class Reactor {
         n += 1;
       }
       this.currentTime += n_iter * this.timeStep * day2ms / this.speedUpFactor;
-      this.emitter.emit("stateChanges", this.getEffluent);
+      this.emitter.emit("stateChange", this.getEffluent);
     }
   }
 }