delete old/un-used files
sidebar functions
footer-/sponsor-related
logo and (fav)icons
modernizr update
masonry.js fallback for CSS columns
favicon
file metadata template
Header: favicons and Apple icons
icon fonts
header: minor/other
homepage redux
templates: minor
CSS
mime type detection
icon_font_for_type()
link_to_item_type_by_name()
homepage_grid_recent_items()
custom.php misc. fixes and improvements