fix(config-backup): ignore a Docker case's conversation id, list every ignored key, correct the retention and restart docs

src/web/public/index.html

@@ -3269,7 +3269,7 @@
                   <div class="set-row has-field" data-search="config backup retention keep days age">
                     <div class="set-row-text">
                       <span class="set-row-label">Delete backups older than (days)</span>
-                      <span class="set-row-desc">0 keeps backups until the count above pushes them out.</span>
+                      <span class="set-row-desc">A backup is removed once a newer one has existed this many days. 0 keeps backups until the count above pushes them out.</span>
                     </div>
                     <input type="number" id="appSettingsConfigBackupKeepDays" class="set-input" min="0" max="3650" step="1" placeholder="30">
                   </div>