added a note detuning tool and fixed mouse cursor glitch when mousing over notes

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@1935 0778d3d1-df1d-0410-868b-ea421aaaa00d

include/piano_roll.h

@@ -118,6 +118,7 @@ protected slots:
 	void drawButtonToggled( void );
 	void eraseButtonToggled( void );
 	void selectButtonToggled( void );
+	void detuneButtonToggled( void );
 
 	void copySelectedNotes( void );
 	void cutSelectedNotes( void );
@@ -139,7 +140,6 @@ private:
 		ModeDraw,
 		ModeErase,
 		ModeSelect,
-		ModeMove,
 		ModeOpen
 	};