Replace normlizr.css with normalize.css
Remove unnecessary javascript.

These functions were left over from Inkblot. Modernizr is not used by
default either, so there's not much reason to include it.
Remove redundant links from admin sidebar.
Unify theme stylesheets.
Refactor theme template tags.
Update Webcomic restricted template.
Update Webcomic home template.
Remove Webcomic feed template.
Refactor templates.

Use <main> element, remove webcomic() conditional checks, and add
responsive <select> menu.
Add POT file for translations.