Progress: <h1> same on all pages, #header

Wrap #header around <h1> and #nav.
Progress: All of #header down the left
Progress: <h1> styled to fit in left, with heart
Progress: <h1> and <h2> like on all other pages
Enhancement: Bigger space between <h1> and #nav

Looks less crowded.
Enhancement: Home-page-specific tweaks

<h1> hidden

Space for bigger bunting.
Progress: Sync with recent screen changes
Merge branch 'consistent_position'

Menu and page content in a consistent position across all pages, including the
homepage, by having the <h1> be in the left column.

It's smaller, but in a heart, and invisible on the home page.