Update galaxy test mapping.
Rebase into model.
WIP: Dataset collection infrastructure glue.
casperjs: PEP-8 fixes for casperjs_runner.py.
casperjs: Fix checking admin check for recent masthead changes.
casperjs: Fix user login, registration, logout for recent masthead changes...

They are generated in javascript instead of HTML now so I don't think they are available when page loads. My fix is to wait for the User menu to appear before attempting these operations.