Add join/register link to top nag
Update test fixtures with Join/Register in top nav
Merge branch 'add-join-register-link-top-nav-846' of https://github.com/tracymu/publicwhip into tracymu-add-join-register-link-top-nav-846
Correct "Login" to "Log in"
Shorten 'Join/Register' to 'Sign up'
make 'sign up' proceed 'log in'
improve account navigation title text
split header scss into site-header and page-header partials
fix width of header search form for new links (css only)
make 'log in' proceed 'sign up'
fade back sign up link slightly
update tests
Merge branch 'tracymu-add-join-register-link-top-nav-846'