Length of the x axis when "downloading as png" the plots

[javiag]

The length of the x axis depends on the length of the legend (which inversely depends on the length of the name of the wikis). If you download a plot with wikis of short names the length of the x axis is longer than if the wikis have a long name. And no legend appears if the plot only has one wiki (so you get a plot with the longest possible x axis).

If possible, consider to use a fixed length for the axes (at least it should be the length of the plots with no legend) and a variable length for the legend (the length could depend on the names of the wikis). Alternatively, the legend could be below the plot, but the height of the axes should not change either.