By Tom Harle The countdown to the first summer Paralympics ever staged in France is gathering pace with 100 days to go until the Opening Ceremony, a groundbreaking celebration set for the Champs-Elysées. British fans have bought more tickets for the Olympics than any other nation except the hosts and a bumper contingent is also expected for the Paralympics, with around one million tickets sold thus far. Everything“The support of our fans means everything,” said ParalympicsGB Chef de Mission Penny Briscoe. “In some ways, they’re our secret weapon. “They are part of the system that supports our …