SF_button_sweepFormula_tofront: Retrieve Sweepformula plot window

When the windows is moved to the front we now also retrieve it, i.e. move
fully into the IP window so that it is always visible.

Found during live testing yesterday.

Author: t-b

Packages/MIES/MIES_SweepFormula.ipf

@@ -6715,6 +6715,7 @@ Function SF_button_sweepFormula_tofront(STRUCT WMButtonAction &ba) : ButtonContr
 			for(i = 0; i < numWins; i += 1)
 				wName = StringFromList(i, wList)
 				DoWindow/F $wName
+				DoIgorMenu "Control", "Retrieve Window"
 			endfor
 
 			break