I18N: localizing the drop, join, admin, and request gif links by putting the gifs in the message catalog, translators are merely expected to provide textual translations (not gifs) in other locales than en_US
I18N: loading the catalog files from the lookup proc now if this hasn't already been done. The reason is that there are message lookups that happen before the acs-lang library files are loaded. The alternative would be to put the loading in a file with a path like acs-boostrap-installer/00-...