add Keystore name to Certificate Detail Window

[weberjn]

Now that the Certificate Details Dialog is no longer modal and you can compare two Certs, the dialog title should also show the store it comes from.
E.g. if you compare the same cert within a keystore and a truststore you do not see where each one is from.

[kaikramer]

I like the idea, the only problem could be that the dialog title already contains the alias which in some cases takes most of the available space or even more: