v1.2.4 live on App Store with UX improvements

Added a "Refresh Page" action so people could have the same background appear with a page effect. You could already do this just by doing a Goto Page with the same page number but that wasn't obvious.
Major gotchas fixed that kept surprising users:

1. When you specified an area for "Tap inside" people were not drawing something big enough. It was even worse for a "Tickle Inside" or "Swipe Inside" sensor. Now there's a warning and you can't save a sensor with the inside area being too small.
2. I observed two users create Touchgrams with multiple pages but no way to get off the first page. Now, if you add another page but there's no Goto Page, a Sensor or Sensor plus Action are automatically added to the previous page.