old_contents: function retrieveGetParameters(){
      let parameters = {}
      window.location.search
          .substring(1)                                       //Remove '?' at beginning
          .split('&')                                         //Split key-value pairs
          .map((currentElement) => {                          //Fill parameters object with key-value pairs
              const key = currentElement.split('=')[0];
              const value = currentElement.split('=')[1];
              parameters[key] = value;
          })
      return parameters;
  }
new_contents: function retrieveGetParameters(){
      let parameters = {}
      window.location.search
          .substring(1)                                       //Remove '?' at beginning
          .split('&')                                         //Split key-value pairs
          .map((currentElement) => {                          //Fill parameters object with key-value pairs
              const key = currentElement.split('=')[0];
              const value = currentElement.split('=')[1];
              parameters[key] = value;
          })
      return parameters;
  }
  
  function getTeamname(){
      const parameters = retrieveGetParameters();
      return parameters["teamname"];
  }
subject: Add function for retrieving team name from URL