Automate screenshot and counts

[timrobertson100]

We should try and automate a process that takes screenshots of the GBIF.org homepage and adds the main counts (occurrences, datasets, publishers etc) to the default template, to make sure it is consistent and save staff time. We might consider expanding this to maps etc too down the line.

Implementing this will require exploring options but might be through either putting the screenshot on a stable URL and using some dynamic load in PPT, or by doing a git checkout, unzip the PPT file, replace the image, rezip, commit.

[MattBlissett]

If this is done, it may also be worth doing in other languages, e.g. French and Spanish.