taking out partitioner
For 'sequential' assignment, at least pick a treatment randomly.
Fix typo in assigning user to an existing experiment.
Record that completed experiments are not assignable.

This doesn't feel right; it looks like we need to finish designing the fixed-group-size case.
Merge remote-tracking branch 'origin/partition-refactor' into partition-refactor
Finish refactoring of partitioner so that tests pass
Change submodule url so travis can check out
remove misleading smart.lock
MIT License; closes #6
lock to pre-blaze, pre-bs3 packages
Avoid testing-Turker login anywhere on the admin interface, not just the front page.
add server/client timers
Fix line that @kcarnold pointed out was missing
Merge pull request #7 from kcarnold/admin-testlogin

Avoid testing-Turker login anywhere on the admin interface, not just the front page.
can't store timeout in database
Give control to the developer over if and when to login to Turk and set usernames.