Single source of truth pattern tiles.

Both inline and dynamic without crashing the browser
Lets do this all in JS.

We only have a handful of patterns to look after. This is simpler.
JS tiles up the patterns so no browser rasterisation issues.
Tiles are CSSable
Cleaning cruft
Removing more cruft
And we're done with the testimonial poster

It still rasterizes. I'm hoping to ask some Firefox developers about how
to avoid it. In the meantime, it is rasterizing at 300dpi. We can yank
the mulitply and it stays vector just fine.
Applies to misc web ads
Update README.md
Merge pull request #11 from RedHatBrand/js-pattern-tiles

Js pattern tiles