Made the placeholder color a bit darker.
Fixed line underneath steps in navbar
Fixed completed and active state for steps during sign up
Misspelled whitespace -> white-space
Changed inbox icon to loading icon for 'Keeping an eye on your inbox' message.
Using placeholder mixin instead of definening my own, also changed to dark grey instead of custom color
Added opacity 1 to placeholder to make sure Firefox doesn't use reduced opacity
Improved spacing between dots in step nav according to whale's pic
Fixed glyph icon color
Bold active text and smaller dot for step nav
Show text instead of field when a email has been invited
Added completed state to styleguide
Changed the color of invited button
Merge pull request #228 from vikfroberg/607-clean-up

Clean up styles on onboarding