Mimic James Hutton Institute PowerPoint theme

Mimics the James Hutton Institute theme using the official colours and layout to roughly match that of the current (2014) PowerPoint templates (the title and general slide layouts only).

To do this the title page (big logo on right) and general background (small logo top right, three coloured boxes top left) have been included as full background images in PDF format. An alternative might be possible using just individual images for these elements.

Note that the James Hutton Logo is copyright and licensed separately (not CC-BY).

The new minimal layout removes the section-based progress indicators, although Beamer's discrete minimal navigation bar along the bottom of each slide has been left in for now.