the 'cut' drop down (AssetHelper) operation basically worked, but the screen wasn't redrawn after the change, and the JSON returned during Fork polling in WebGUI::AssetHelper::Cut didn't match what the YAHOO.WebGUI.Fork.poll callback in WebGUI.Admin.prototype.openForkDialog was expecting so status communication had to be wired up.  wG::ProgressTree exposes 'flat' now too for the sake of computing a progress bar.  looking at only the roots nodes is ineffective; in this case, the number of root nodes would only ever be 1 though the number of child nodes to be processed could be much higher.  WebGUI.Admin.prototype.openForkDialog's callback to YAHOO.WebGUI.Fork.poll handles a status JSON message (JSON inside of JSON, ugh) of "reload" and there's an admin.reload() method now.  that's also callable from WebGUI.Admin.prototype.processPlugin and was done in the style of its handlers.
refactor WebGUI.Admin.prototype.gotoAsset slightly to avoid code duplication
WebGUI.Admin.prototype.addPasteHandler: guessing but fix use of 'this' vs 'self'
currentTabName() to avoid code duplication for figuring out which context we're running in (Tree/View)
WebGUI.Admin.prototype.pasteAsset:  handle pasting in the Tree view by flopping over to the View view first
removed WebGUI.Admin.Tree.prototype.runHelperForSelected and relatedly WebGUI.Admin.Tree.prototype.cut, copy, shortcut, duplicate, delete; these are dead code
WebGUI.Admin.Tree.prototype.goto: better error handling/debugging
added this FIXME to WebGUI.Admin.prototype.gotoAsset:
a lot of Tree view operations fail after this point.  where the View version just directly goes to the URL, the Tree view tries to modify the URL to pass the extjs-style grid's parameters back.  this winds up creating unworkable URLs that try to do two things at once, with two '?'s, two 'op='s, etc.  there are two ways to fix this:  if we're trying to go to an asset (gotoAsset) and we're in Tree view, flop back to View mode first; or else two distinct requests, one for the remote request (which might generate additional requests to draw in dialog boxes, progress bars, forms, etc) and then when that's all done, refresh the grid view.  WebGUI.Admin.prototype.pasteAsset takes the route of flopping to Tree view first.
don't let non-priviledged users turn on the admin; additional logic to kick them out of admin when they're no longer logged in would be nice too.