Add previous and next note buttons to the edit pro guitar note dialog window

[GoogleCodeExporter]

As requested here:
http://www.fretsonfire.net/forums/viewtopic.php?f=11&t=50698#p573483

The tasks for this enhancement would be:
1.  Update the dialog window to add the buttons.  Clicking "next" should seek 
to the next note and refresh the dialog window to reflect that note.  Clicking 
"previous" would similarly operate, but for the previous note.
2.  Add logic so that if any changes were made before clicking next or 
previous, prompt the user whether the changes should be applied.  If yes is 
selected, run the auto-apply logic to offer to fill in or apply the name or 
legacy bit mask.

Original issue reported on code.google.com by raynebc on 16 Jan 2011 at 7:53

[GoogleCodeExporter]

Original comment by raynebc on 4 Nov 2011 at 11:23

• Added labels: Priority-High
• Removed labels: Priority-Medium

[GoogleCodeExporter]

Completed in r846.  I've decided that prompting the user whether or not to 
apply changes when changing to the next/previous note is more work than it's 
worth, considering the user is presented an Apply button.

Original comment by raynebc on 12 Nov 2011 at 10:13

• Changed state: Fixed