* Updated screenshot in README.md, as well as replaced fb_share.png with the same image.
* Removed 512px.png and replaced it with 512pxr.png (a round version) in manifest.json.
* globals.v is now split into globals.v1 and globals.v2. The former for CSS and JS files, the latter for images and config files (manifest.json, etcetera).
* All static images that are part of the layout will now have their URLs appended with globals.v2 (which means this does not include dynamically generated images such as thumbnails of uploaded files).
