1st and 2nd order quadrature for simplices
Removed 3d point in 2d test
merged logg/topic-multimesh
added missing cmakelist
finished SimplexQuadrature, need to be tested
added MultiMesh to dolfin_mesh.h
Testing MultiMesh functionality
SimplexQuadrature testing
First test of MultiMesh triangle ok
MultiMesh unit test with two meshes ok
Testing collidision of three meshes
Three meshes ok
Add quadrature integral in multimesh demo
Merge branch 'august/topic-quadrature' into logg/topic-multimesh
Some cleanups and fixes after code sprint with August. Collision and
integration over multiple (=3) intersecting meshes seems to work now.