promise chain fixed to pass exceptions

frontend-js/src/main/js/ServerConnector.js

@@ -1272,22 +1272,20 @@ ServerConnector.getChemicalNamesByTarget = function(params) {
 
 ServerConnector.addComment = function(params) {
   var self = this;
-  return new Promise(function(resolve, reject) {
-    return self.getProjectId(params.projectId).then(function(result) {
-      params.projectId = result;
-      return self.getToken();
-    }).then(function(token) {
-      params.token = token;
-      params.coordinates = self.pointToString(params.coordinates);
-      return self.sendPostRequest(self.addCommentUrl(), params);
-    }).then(function(content) {
-      var response = JSON.parse(content);
-      if (response.status === "OK") {
-        resolve();
-      } else {
-        reject(response);
-      }
-    });
+  return self.getProjectId(params.projectId).then(function(result) {
+    params.projectId = result;
+    return self.getToken();
+  }).then(function(token) {
+    params.token = token;
+    params.coordinates = self.pointToString(params.coordinates);
+    return self.sendPostRequest(self.addCommentUrl(), params);
+  }).then(function(content) {
+    var response = JSON.parse(content);
+    if (response.status === "OK") {
+      return Promise.resolve();
+    } else {
+      return Promise.reject(response);
+    }
   });
 };