styleIndex start from 0 and applyXxx ignored on most implementation

* styleIndex start from 0
 * test added (TestGetStyleFromZipFile)
* applyXxx ignored on most implementation
 * tested by MSExcel and LibreOffice (open testfile.xlsx on LibreOffice, you can confirmed A1 cell bgcolor. but applyFill doesn't defined on A1 cell.)
 * [It is not referred to by PHPExcel, either. 
](https://github.com/PHPOffice/PHPExcel/blob/develop/Classes/PHPExcel/Reader/Excel2007.php#L538)