Created test for sumpy constant one kernel. Created 'local quad' fmm driver,...

Created test for sumpy constant one kernel. Created 'local quad' fmm driver, expects several new user routines from wrangler for handling generic local quadrature. Both sumpy and test-fmm constant one tests have been updated to use the local quad fmm driver. Minor change to mesh_intersection func to move away from one 'mega func' for all area intersection types.