v0.316.2: two more leftovers on the data tab

Biztonsagi mentes was still a card — it sits directly in the tab, not inside a section, so the
.app-section scoping rule did not reach it. It is a section now.

The 2nd-copy heading still read '2. mentes beallitasa — <app>', because the locale key carries the
app name: it was a PAGE title, and a tab already says which app it is. New key
app_page.second_backup ('2. mentes' / 'Second backup'). This is the leftover the task named.

Found by looking at the rendered page, not the markup.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0117kRTSgs3rJWUFGxyoWN6Y

controller/internal/web/templates/app_data.html

@@ -87,8 +87,8 @@ function appMigrate(btn,app,label){
 
 {{/* The nightly copy, stated as a fact. It was a card on the settings page; the files it is about
      live here. */}}
-    <div class="deploy-cross-drive">
-        <h4>{{T "deploy.biztonsagi_mentes"}}</h4>
+    <div class="app-section deploy-cross-drive">
+        <h3>{{T "deploy.biztonsagi_mentes"}}</h3>
 
         <div class="cross-drive-nightly">
             <span class="form-hint" style="display:block;margin-top:.25rem">
@@ -101,7 +101,7 @@ function appMigrate(btn,app,label){
 {{/* v0.316.0: a SECTION, not a page title over a card. „2. mentés beállítása — <app>" was the
      heading of a page that no longer exists; the tab already says which app this is. */}}
 <div class="app-section">
-    <h3>{{T "tier2_config.2_mentes_beallitasa"}}</h3>
+    <h3>{{T "app_page.second_backup"}}</h3>
 {{with .Tier2}}
     <p style="color:var(--text-3);font-size:.9rem;margin-top:0">
         {{T "tier2_config.a_2_mentes_egy_masik"}}