publicly expose connection states

closes #1585
updated; driver to 1.3.12
tests; more forgiving reconnect uri
tests; fix sharding tests

for mongodb 2.4.5
updated; sliced to 0.0.5
update driver; 1.3.15
Merge branch '3.6.x' into gh-pages
Updated the landing page template

Now includes information about the unstable releases.
docs; auto open after starting static server
Merge branch '3.6.x' into gh-pages
updated; sliced to 0.0.5
docs; auto open after starting static server
make docs_from_current_branch
website; tweak homepage
Merge branch '3.6.x' into gh-pages
website; regen
website; add unstable docs
website; tweak homepage
Merge branch '3.6.x' into gh-pages
docs; pull in master changes