Extend image generation by GrayScale option

cmsimage.php/WxHxCROPxQUALITYxGS/HASH|ID.EXT will return GrayScale image.

Once created temp images can be grayscaled too via sending it to cmsimage.php.
cmsimage.php/convert-gs/thumbnail.pic will return GrayScale image when it exists.

All images can be GrayScale by default. Just set
$phpwcms['im_fix_colorspace'] = 'GRAY';
or
$phpwcms['colorspace'] = 'GRAY';
Updated date