Remove extraneous app.Draw() calls by having app.Draw() in its own routine

wtf/focus_tracker.go

@@ -150,9 +150,7 @@ func (tracker *FocusTracker) focus(idx int) {
 
 	view := widget.TextView()
 	view.SetBorderColor(ColorFor(Config.UString("wtf.colors.border.focused", "gray")))
-
 	tracker.App.SetFocus(view)
-	tracker.App.Draw()
 }
 
 func (tracker *FocusTracker) focusables() []Wtfable {

wtf/helpful_widget.go

@@ -33,5 +33,4 @@ func (widget *HelpfulWidget) ShowHelp() {
 
 	widget.pages.AddPage("help", modal, false, true)
 	widget.app.SetFocus(modal)
-	widget.app.Draw()
 }

wtf/text_widget.go

@@ -45,10 +45,6 @@ func NewTextWidget(app *tview.Application, commonSettings *cfg.Common, focusable
 
 	widget.View = widget.addView()
 
-	widget.View.SetChangedFunc(func() {
-		app.Draw()
-	})
-
 	return widget
 }