Cleaning up

Small updates. The main 'game' is unchanged but there's been some small edits to the 'backstage' cards.

- Dialogizer card no longer gives workaround advice on making textboxes appear at specific sizes and recommends using the new options in Dialogizer 1.3 instead.

- Added that the "Rect" module can be found in the "draggable" example deck on the card that discusses canvas settings.

- Added a further clarification on the "Referring to widgets on other cards" card based on comments from IJ and Coral Nulla

- Small adjustments to some chalkboard art.

That's all! If you ever want to get to the backstage reference area from the title screen without having to play through the main narrative, there's a friendly chicken hidden on the title screen who can help. (Or you can get there with the left arrow key.)