#35 Add more Standard shortcuts

[Patrick Bielen]

This request is moved from bug to feature list.
Request filled by frederic_lopez

Hi,

some standard shortcuts aren't available while editing
notes, tasks or events. These shortcuts may be missing
in other parts of Memoranda too, I didn't try them
everywhere. I don't know if they are easy to support
with Swing in a standard way, but here is a list of
them anyway :

In note, task and event editing :
Ctrl-INS for copy
Shift-INS for paste
Shift-DEL for cut
Ctrl-Y for redo

In task and event editing :
Ctrl-Z for undo
Ctrl-Shift-Z for redo

There are maybe other shortcuts which are unavailable,
I've listed only the ones that came to mind.

Thank you.