Notifications form; "Copy" button added below grid to easily copy contents to the clipboard

A "Copy" button has been added below the grid on the Notifications form (viewed by clicking the Icon to the left of the User icon in the top-right of the User Interface).

NOTE: This not designed to copy the content to the clipboard in a specific format, it simply allows an easier way than selecting the text and copying it to the clipboard which can be fiddly or, in the case of touch devices, almost impossible.