Editor 2.0 #297

The current editor does everything it should. It even works on mobile! Even though, there are some improvements we want to make:

1. respect the format of the original image (currently is getting cropped into a fixed format)
2. export the comic structure (background image and speech bubbles)
3. display larger buttons on touch devices

Additional considerations:

• pick / make background image before opening the editor
• double click / tap a speech balloon to edit its text
• zoom (+ move) the background image