Fixing PNG images from graphs
One of the reason why I use "Download plot as PNG" is to put it into presentation or tweet or whatever. Attached is how it now looks like.
- legend is taking unnecessary space and that's why I suggested to move it on top in #27 (closed)
- title is missing. That's why I suggested every graph should have a title in #26 (closed) and this title should be part of png
- instead of title, graph contains control buttons that doesn't make sense to be displayed in PNG.