Add site admin column to user

Enable site-wide administrator role.
Add spacing below header, put body into bootstrap container
Refactor Bootstrap - body and navbar
Conversion from Bootstrap 1.x to 3.x, Part 2

Add green button formats, content boxes, heading colors, nav styling.
Layout for dashboard projects partials
Merge branch 'css-for-color-consistency-content-alignment'

Note: Add site admin column to user wasn't done in this branch,
was pulled in by interactive rebase.

* css-for-color-consistency-content-alignment:
  Layout for dashboard projects partials
  Conversion from Bootstrap 1.x to 3.x, Part 2
  Refactor Bootstrap - body and navbar
  Add spacing below header, put body into bootstrap container
  Add site admin column to user