Handle Undo

[kdkavanagh]

When a note is removed from the grid, it should be deleted from the server, but held in memory on the client. If the user undo's the delete, the note should be recreated on the server based on the note that was held in memory

[kdkavanagh]

*Only the note model should be held in memory. It should be removed from the notecollection and its views should be deleted too.

[kdkavanagh]

Will this be done by tonight?

[kdkavanagh]

Need to handle undo in tasks too, not just notes