various changes to improve integration tests

vendor/github.com/jesseduffield/gocui/tcell_driver.go

@@ -84,6 +84,10 @@ func (g *Gui) tcellInitSimulation() error {
 	} else {
 		g.screen = s
 		Screen = s
+		// setting to a larger value than the typical terminal size
+		// so that during a test we're more likely to see an item to select in a view.
+		s.SetSize(100, 100)
+		s.Sync()
 		return nil
 	}
 }