added to ignore
Added method to create a backup of Notes
Fixed a bug which if NewNote () was called and we hadn't loaded the 
Note database, then a Note of 0 would be genearated.
If the file didn't actually get saved to the file system, an error was
thrown.
changed method sig.
Merge branch 'trepidity/master'

Conflicts:
	.gitignore
	Tomboy-library/Tomboy/Storage/DiskStorage.cs