Add one-click panel auto-update from git.evilfox.cc (v2.4.0).

Check Gitea releases in Settings and install the latest tag via git fetch/checkout with pip sync and restart when running from a git checkout.

translations/fr.json

@@ -519,4 +519,21 @@
     "xui_server_select_label":  "Serveur 3x-ui",
     "xui_server_select_hint":  "Choisissez le panneau 3x-ui qui émettra l\u0027URL d\u0027abonnement.",
     "xui_server_delete_confirm":  "Supprimer ce serveur 3x-ui ?"
+,
+    "about_title":  "About & Updates",
+    "current_version":  "Current version",
+    "check_updates":  "Check for updates",
+    "checking_updates":  "Checking...",
+    "update_available":  "New version available",
+    "download_update":  "Download update",
+    "up_to_date":  "You have the latest version",
+    "apply_update":  "Install update",
+    "applying_update":  "Updating…",
+    "apply_update_confirm":  "Install update from git.evilfox.cc and restart the panel?",
+    "update_restarting":  "Updated. Restarting panel…",
+    "update_no_target":  "No target version. Check for updates first.",
+    "auto_update_hint":  "Auto-update pulls the release tag from git.evilfox.cc (git checkout required).",
+    "auto_update_ready":  "Git auto-update is available for this install.",
+    "auto_update_docker":  "Docker install: rebuild/pull image, or use a git checkout for one-click update.",
+    "auto_update_manual":  "One-click update needs a git clone. You can still download a release."
 }