Provide promotional materials to stalls

[keithamoss]

When they get the stall confirmation / approved email, send them some A4 (?) templates for graphics they can print out to promote our site like "We're on the map!".

Have a few different variations for them to choose from.

It should look good when printed on a budget-tier colour printer.

It should be clearly visible from several metres away.

Our branding should be prominent, but not too in your face.

Probably no need to customise for each election.