The edit_template property is determined from edit_name that is translated when language is not English:
https://github.com/metabrainz/musicbrainz-server/blob/master/lib/MusicBrainz/Server/Edit.pm#L15

As a consequence, edit details can't be displayed if language is not English:
http://i18n.mbsandbox.org/edit/14678011 shows error

Couldn't render template "file error - edit/details/ajouter_un_média.tt: not found"

("Add medium" translates to "Ajouter un média" in French)

Edit types being in the database (rather than defined in sub edit_name in every edit type) would probably make for a cleaner solution to this

In light of my http://codereview.musicbrainz.org/r/1941/ changes, I'll probably add an l_edit_name function to edits, so it's possible to specify translated or untranslated, then migrate things where appropriate.

http://codereview.musicbrainz.org/r/1994/