WTF-748 Fixes and improves module templating (#786)

Fixes and improves the module templating for creating new bare-bones
text widgets.

This command:

    WTF_WIDGET_NAME=MyNewWidget go generate -run=text

now properly generates:

    * the module directory in the /modules directory
    * the widget.go file
    * the settings.go file

with no linter warnings or errors.

Signed-off-by: Chris Cummer <chriscummer@me.com>

modules/digitalclock/display.go

@@ -24,5 +24,4 @@ func (widget *Widget) display() {
 	widget.Redraw(func() (string, string, bool) {
 		return widget.CommonSettings().Title, renderWidget(*widget.settings), false
 	})
-
 }