set some default font sizes
clear out some old css
make whole brand element in header green
simplify layout of main page countent

remove header from main content, add in the sub nav things and reduce
the number of divs we use to layout the panels
Also correct row class names
add content header section back in with hardcoded placeholders

Uses a wrapper so we can set the background image approriately for the
assembly/member and then can layer the shading over the top for
legiblity.