EZP-22280: Fixed image parser test
EZP-22280: Added phpdoc on ScaleDownOnlyFilterLoader
EZP-22280: Added tests for ScaleDownOnlyFilterLoader
EZP-22280: Added phpdoc for ScaleWidthFilterLoader
EZP-22280: Added tests for ScaleWidthFilterLoader
EZP-22280: Added abstract FilterLoaderWrapped class
EZP-22280: Added ScaleHeightFilterLoader
EZP-22280: Implemented ScaleWidthDownOnly / ScaleHeightDownOnly filter loaders
Fixed variable name
EZP-22280: Implemented ScaleFilterLoader