Adjust font sizes, borders on navbar and on row-fluid.
form margin bottom changed
fixed conflict in style.css
layout tightended
provenance tab moved up
unit choice select small
class for unit selection has been added
fixed button sizes
changes : - buttons, drafts, reviews
changes to io step
Add all logic for login/logout back into the system.
Merge branch 'layout-spike' of github.com:prisms-center/materialscommons.org into layout-spike