code: public static String getProperty(Class<?> aClass, String key)
  	{
  		return getSettings().getProperty(aClass, key);
  	}
docs: Retrieves a configuration property as a String object.
  <p/>
  Loads the file if not already initialized.
  
  @param aClass the calling class
  @param key property key
  
  @return Value of the property as a string or null if no property found.