* Reorganized some CSS to remove redundant styles; removed empty selectors
* Added an overflow to the site content to prevent side scrolling with wide blocks
* Fixed some wide alignment weirdness with images
* Made align full and align wide styles more general, so they'd be applied to all classes; made sure text-based aligned blocks weren't quite as wide.
* Added bottom margin to Media & Text block.
* Made the post title 100% of the width
* Reset selectors back to default styles
* Updated JavaScript that adds wide image class, to skip any images inside of GB blocks.
