Fix imageTypes to imagingTypes as is proper in Host.class.php

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@1892 71f96598-fa45-0410-b640-bcd6f8691b32
Fix, again, the imagingTypes settings.  It's a boolean, not an array.

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@1893 71f96598-fa45-0410-b640-bcd6f8691b32