Reference the distributed array protocol in docs.
Correct a couple of docstrings.

One was generating a sphinx warning.
Fix API reference.
Fix another sphinx warning.
Mention optional matplotlib dependency.
Add matplotlib to travis build...

to build the api reference for plotting.py.
Replace 'pngmath' extension with 'mathjax'...

to avoid having to install LaTeX.  I don't think we're using much if any math notation anyway.

Also removed the unused `html_static_path`.
Merge branch 'master' into feature/update-docs
`grid_shape` generalized to handle non-distributed dims.

Removes `distdims` and `ndistdim` attributes of LocalArray.

Testsuite updated and passing.
Cleans up paralleltest_localarray.py.
Fix a couple of .PHONY lines that were out of sync.
Documentation fix in utils.mirror_sort. PEP8.
Merge pull request #233 from cowlicks/utils-fix

Documentation fix in utils.mirror_sort. PEP8.
More refactorings relating to grid_shape.
Merge pull request #234 from enthought/bugfix/fix-make-phonys

Fix a couple of .PHONY lines that were out of sync
denselocalarray -> localarray in client.py and decorators.py
denselocalarray -> localarray in denselocalarray.py
denselocalarray -> localarray in __init__.py
denselocalarray -> localarray in random.py
Move Context tests to test_context.py