Fixed menu headers

The menus for the headers were a bit wonky, and weren't working right.
The reason for this is that they were inside of a row, but not inside
of a column.  By taking them out of the row div, it ended up fixing
the problem.  The styling was also changed and simplified.  All
headers now simply inherit the same color, and pretty defaults for
bootstrap are used instead.  The menu looks even better now!