web: the studio header carries the mark and the page name too

The landing, /admin and /profile all show the icon + RecipesCam wordmark
with the page name beside it; the studio still showed a bare "RecipesCam
web" text. Same pair now, so the phone header says where the visitor is.

docker/frontend/src/i18n/en.ts

@@ -114,6 +114,7 @@ export const en: Dict = {
 
   'nav.admin': 'Admin',
   'nav.profile': 'Profile',
+  'nav.studio': 'Studio',
   'adm.title': 'Strip moderation',
   'adm.subtitle': 'Photos contributed by users. Delete one to pull it off the landing page.',
   'adm.upload': 'ADD A PHOTO',

docker/frontend/src/i18n/vi.ts

@@ -16,6 +16,7 @@ export const vi = {
   'nav.back': 'Về trang chủ',
   'nav.admin': 'Quản trị',
   'nav.profile': 'Hồ sơ',
+  'nav.studio': 'Studio',
   'nav.guest': 'Khách',
 
   'act.undo': 'HOÀN TÁC',