add  to lots of util to prevent automodapi trying to document imports
remove the odict implementation and just use astropy
Removal of the last sphinx warnings.

Varibles in function signatures that ended with _ had to be removed.
add sphinx to the travis build
only test sphinx under 2.7
fix travis yml syntax for tests
fix travis syntax for sphinx_build
doc typo
strip whitespace
small refactor of the travis yml
fix travis build
fix the sphinx build
Merge pull request #727 from Cadair/documentation_sprint

Fix ALL THE WARNINGS