Issue #193: Flatten attributes in templates using backdrop_attributes().
Issue #193: Remove title_attributes everywhere except for the dynamic block.
Issue #193: Flatten content attributes in templates using backdrop_attributes().
Issue #193: Flatten html, body, and item attributes in templates using backdrop_attributes().
Issue #193: Rework color module to use hook_css_alter().
Issue #193: Retrieve html head, css, and js directly from page templates.