i18n.php cleanup.
Merge branch '2.0' of https://github.com/justintadlock/hybrid-core into 2.0
Make sure single post titles display HTML markup.
Adds the hybrid_get_menu_location_name() function, which is used for adding the `aria-label` attribute for nav menus.
Add translators note.
Add hybrid_get_sidebar_name() function and use it for the `aria-label` attribute on sidebars.
Add inline docs for hybrid_get_sidebar_name() and change the $handle variable to $sidebar_id to make it clearer.