Backend: Bugfix renaming local project files folder.

backend/app.py

@@ -28,6 +28,8 @@ UNAUTHORIZED_STATUS_CODE = 401
 
 DEFAULT_EDITOR_SETTINGS = {'fontSize': 16, 'margin': 80, 'tabSize': 4}
 
+WORKING_DIR = os.path.dirname(os.path.abspath(__file__)) + '/'
+
 ### GENERAL ###
 def generate_response(response, status, headers={}):
     response.status_code = status
@@ -484,7 +486,7 @@ def update_file_request(file_id):
                     new_path = open_project_path + file['parent'] + '/' + file['name']
                 else:
                     new_path = open_project_path + file['name']
-                os.rename(old_path, new_path)
+                os.rename(WORKING_DIR + old_path, WORKING_DIR + new_path)
 
     return generate_response(db.file_schema.jsonify(
         db.update_file(updated_file)), OK_STATUS_CODE)