Fix progress bar display for copy.
update Delete AssetHelper for the new admin JS
Remove debug code from Delete and Copy
Need at least one call to the sub that updates the Fork status.
Call the right sub to update the Fork status.
Fix label, remove debug.
Update CopyBranch for newest fork code.
WebGUI.Admin.prototype.reload: fix a lot of Tree view operations by doing a this.tree.goto on location.pathname rather than href to drop incidental
query parameters.  the view frame grows query parameters when it shows various edit and admin screens.
add comments about safe/unsafe uses of goto with respect to Tree's URL mangling
made updating the status message in the Fork progress dialog optional so the 'undefined' message should be gone now.
Remove extra call to old tree updating code.
Making the "Copy Branch" menu option work was a treat.
requestHelper() invokes an asset helper via AJAX.  processPlugin() handles the JSON responses, which in this case is to open a dialog box and show
a given URL in it (openDialog key in the JSON hash).  that pop-up is open and the page loaded, and that displays a form.  that form submits
to an asset helper (uh oh) which also returns JSON (actually, it was failing to do even that and was stringifying a hash).  even if it returned
JSON, it would just get shown to the user in the pop-up.  so the form that gets loaded into the pop-up has to, onsubmit, after it has config
details from the user, run JS to make the AJAX request to the asset helper to start the actual copy operation, call into the admin's JS to
pop up the dialog that polls on a forked process, and then call into the admin to close itself.  this is a nasty hack that daisy chains
together two possible replies to processPlugin(), one after the other.
Revert "refactor WebGUI.Admin.prototype.gotoAsset slightly to avoid code duplication"
... oops, dead code may not be dead afterall

This reverts commit aeb26ab0f7262b26c1d8225cff2555df0cd43f09.

Conflicts:
	www/extras/admin/admin.js
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
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-st
don't reload the Tree/View pane after a Copy Branch operation; Copy Branch doesn't mutate the asset tree being viewed so not needed
$session->asset is not defined if we're running from a Content Handler or the like.  make reporting it conditional so that we don't get error output from our error output.
finish the "Upload Files" implementation; the AssetHelper had some bugs and needed to close the pop-up dialog that it created.