Add support for computing jacobians for quad extruded meshes in 2d and 3d.
Handle inverse jacobian computation for 2d and 3d quads.
Merge pull request #298 from OP2/extrusion-quad-jacobi

Add jacobian computations for extruded quads (interval x interval).
Bump PyOP2 FFC compatibility version to 0.5.0
Bump version to 0.9.0