#835670 by eternalistic: Fixed radio buttons not being selectable in Opera.

#839070 by eternalistic, erion: Made text in search translatable.
#783542 by eternalistic, ndwilliams3: Fixed naming of sidebar regions in CSS.
#467172 by eternalistic, WorldFallz: New image and CSS for throbber on input fields.

Also updated styling for "submitted by" text in comments due to changes in Fusion Core.