new file 100644
import conservancy
def index(request):
partial_amount = conservancy.param_if_valid(request.GET, 'upgrade', 'upgrade_id', 0)
context = {
'partial_amount': partial_amount,
'minimum_amount': 120 - partial_amount,
}
return conservancy.render_template_with_context(request, "supporter/index.html", context)