I have noticed that the version of "ZeroClipboard" used in your project is old. The reason I checked it is because the performance showing/loading password result in the list view takes very long if mofe than 25 rows is selected. With Chrome Developer Tools I could see the time is spend on ZeroClipboard.
Is there a chance you could integrate a newer version of ZeroClipboard?
Thanks for your attention,
Zjef
I checked and there is a much newer version of ZeroClipboard