Small code tidy in handle_tree_selection()
Tree images and selected objects have fileset id
Moving icon selection logic to containers_icon.html

This code will be removed from center_plugin.thumbs.js.html in a subsequent commit
Filesets of selected thumbnails shown in center panel
Fix 'wells' de-selection bug from previous commits
Blitz image.getFileset() method
Templates use img.fileset.id.val don't load filesets
Show fileset thumbnails in right panel for Images
Ordered Fileset thumbs in right panel with 'this' image shown
Fileset thumbs link to show-image
Handle >5 fileset thumbs with 'show all' See #10803
Handle images with NO fileset
Fileset thumb selects image if in tree
Keep fileset thumbs 'shown' on selection change
Blitz Adding FilesetWrapper class
fileset.copyImages() don't need wrapping now
Don't highlight non-fileset files
'show all' -> 'hide' text on click
Updating colour of selected & fileset thumbs
Fix selection of Not-Owned image thumbs