remove unused files
simplify/remove get_ref()
remove unused usesession
move some utils to utils.py
remove extra definition of json_apply
remove references to cloud
cleanup, inital stab at docs improvement
Updated examples to use new add* low levels functions.
complete docstrings for session.py
Change title and 'space' style.
make autoadd/autostore into properties
make document.contexg a property
Merge branch 'task/cleanup2' of github.com:ContinuumIO/bokeh into task/cleanup2
remove unused merge function
fix get_context in build_gallery.py
remove Document.remove and add tests and validation to properties
fix stupid dict deletion error
keep glyphs in alphabetical order
add more reference docs (compat, document, session, etc.)
move compat examples under examples/compat