Working latex manual generation.
Remove mesh.compute_boundaries

It's always been a no-op and we're never going to use it.
Add tests of zero form assembly with multiple integrals
mesh: Use entity class information to construct facet sets

We were computing the correct sizes for the PyOP2 sets, but not using
them, so do that.

Note that this necessitates a disgusting hack when computing the
exterior facet boundary node map.  Since the facet sets don't have halo
information, we build a set of the correct size to carry out the
par_loop that populates the map we want rather than iterating over the
facet set.
TrialFunction -> TestFunction
Add test of upwind flux construction

Construct a BDM1 flux F such that div(F) == D0 where D0 is an upwind DG0
approximation to div(u*D).
Merge pull request #283 from firedrakeproject/ffc_interface_test_fix

TrialFunction -> TestFunction
swap TrialFunction and TestFunction variables to match naming convention
Merge pull request #284 from firedrakeproject/flux_test

Add a test of upwind flux construction.  Construct a BDM1 flux F such
that div(F) == D0 where D0 is an upwind DG0 approximation to div(u*D).
Merge pull request #285 from firedrakeproject/latex_docs

Edits to the RST so that make latex and make latexpdf work.
random missing docstrings
Workaround for docstrings on properties
Merge pull request #289 from firedrakeproject/missing_docs

Fix some and add some missing docstrings.
io: Ensure output directory exists
Correct convergence orders in nonlinear helmholtz test
Support projection of UFL expressions
Use solver_parameters not parameters in NLVS

To be consistent with solve, use solver_parameters to specify parameters
to the solver.
Mention MixedVectorSpaceBasis in solve docs
Merge pull request #282 from firedrakeproject/minor_fixes

- Mention MixedVectorSpaceBasis in solve docs
- Use solver_parameters not parameters in NLVS
- Support projection of UFL expressions
- Correct convergence orders in nonlinear helmholtz test
- io: Ensure output directory exists
- Remove mesh.compute_boundaries
Remove missed xfail from nonlinear helmholtz test