Added non-cyrilic Spanish translation of Settings to i18n file.
Changed Spanish Lenguas to Idiomas in i18n.
Switched WET theme mobile view logo over to SVG to avoid fuzziness.
Returned h1 to default appearance and decreased prominence of site title and sub-site name in mobile view as per #1204.
Added lang attributes that were missing from mobile view.
Minor code cleanup.
Removed text shadow from mobile menu links.
Fixed mobile menu corner rounding issue (too much specificity).
Fixed font size consistency issues in mobile menu.
Fixed side menu width issue at 1200px+ in WET theme.