[support] making image module work with multisite

[Ryan Grace]

okay.
  this is strange that images wont show up on other subsites in 
multisite mode.
  there is nothing in the node table for each image pointing to which 
subsite it was added under.
  yet, when you try to view an image node, the image only shows on the 
subsite it was added under..
 the other sites just get the node name and comments without an image...
 see thefractal.org/node

any ideas?
thanks
ryan grace.