SP-751 BIS-478 iPad Barcode functionality + Empty Search crash app bugfix

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXBarcodeFormat.h

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXBinarizer.h

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXBinarizer.m

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXBinaryBitmap.h

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXBinaryBitmap.m

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXDecodeHints.h

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXDecodeHints.m

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXDimension.h

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXDimension.m

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXEncodeHints.h

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXEncodeHints.m

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXErrors.h

openbis-ipad/source/objc/openBIS/ZXingObjC/ZXErrors.m

...source/objc/openBIS/ZXingObjC/ZXInvertedLuminanceSource.h

...source/objc/openBIS/ZXingObjC/ZXInvertedLuminanceSource.m

...is-ipad/source/objc/openBIS/ZXingObjC/ZXLuminanceSource.h

...is-ipad/source/objc/openBIS/ZXingObjC/ZXLuminanceSource.m

...-ipad/source/objc/openBIS/ZXingObjC/ZXMultiFormatReader.h

...-ipad/source/objc/openBIS/ZXingObjC/ZXMultiFormatReader.m

...-ipad/source/objc/openBIS/ZXingObjC/ZXMultiFormatWriter.h