This cleans up 856756ec a bit:
 * add vim footer for new file
 * use UpperCamelCase for class names
 * use const references for parameter / bulk object passing
 * indent properly
 * don't mix private/public class members randomly
 * use customary exception object, actually handle the error
 * stick comment classes into oox namespace
 * use 'ma' class member prefixes where applicable

Change-Id: I98021415331e62a8ee583ecfd27829f7dbfbc498