Can't browse directories with spaces in inventory ui

If there is a directory with spaces in the name like "Example Folder", the inventory ui code uses urllib.quote to set the absolutepath to "Example%20Folder", which is correct. The probem is that the inventory.pt template then uses the url function to construct the full href and in turn also performs a quoting. Since it sees %20 in the string, it expands it to %2520, to make the final string "Example%2520Folder". As such, the href is invalid and the end result is that users cannot browse directories with spaces in them.

The solution is to not perform the initial quote, in the inventory_ui code and let the url function in the template do the quoting, thus preventing double escaping. Attached is the simple patch to fix this.