Removed header search - now using navbar search as primary search element
note: previously there were two search sections (header and navbar; toggled respectively depending on screen width), now there is just one.
Adjusted navbar-profile and navbar-search to align with metabar
Merge pull request #219 from microcosm-cc/jim-20140324

Search bar moved
Changed search placeholder text so that it's less cluttered
First partial at adding the membership groups
Merge branch 'groups' of github.com:microcosm-cc/microweb into groups