Layout v2 template cleanup: remove container wrappers, fix changelog offset

- settings_orphaned_jobs.html: remove outer container-fluid div (bc-content
  already provides padding in the new sidebar layout)
- changelog.html: reduce sticky-top offset from 80px to 24px (no topnav
  anymore, only sidebar)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

containers/backupchecks/src/templates/main/changelog.html

@@ -9,7 +9,7 @@
 <div class="row">
   <!-- Sidebar with version navigation -->
   <div class="col-lg-3 col-md-4 d-none d-md-block">
-    <div class="changelog-nav sticky-top" style="top: 80px;">
+    <div class="changelog-nav sticky-top" style="top: 24px;">
       <h6 class="text-body-secondary text-uppercase mb-3">Versions</h6>
       <nav class="nav flex-column">
         {% for version_data in changelog_versions %}

containers/backupchecks/src/templates/main/settings_orphaned_jobs.html

@@ -3,7 +3,6 @@
 {% block title %}Orphaned Jobs Preview{% endblock %}
 
 {% block content %}
-<div class="container-fluid py-4">
 <div class="d-flex justify-content-between align-items-center mb-4">
     <div>
       <h2>Orphaned Jobs Preview</h2>
@@ -83,5 +82,4 @@
     <p class="mb-0">All jobs are properly linked to existing customers.</p>
   </div>
   {% endif %}
-</div>
 {% endblock %}