removed check for imagemagick from setup
Changes made to remove imagemagick dependencies
Error messages for uploading images which are too large for gd to process now show the image sizes in MB or KB not bytes. Also removed duplicate code
modified so that graphics check looks for imagemagick or GD
imagemagick fallback to gd situation now shows up different in css - as a warning
reworked image_is_too_big a bit to eliminate truth value
cleaned up image_import.php to just add warning about sizes when imagemagick is not available
fixed bug where failed giant (but not resized) image would still be saved on import errors