Merge admin panel and punishment panel applications into staff panel

.env.example

@@ -1,7 +1,6 @@
 VITE_API_URL=http://localhost:8080
 
-VITE_ADMIN_PANEL_URL=
-VITE_PUNISHMENT_PANEL_URL=
+VITE_STAFF_PANEL_URL=
 VITE_GITEA_URL=
 VITE_WEKAN_URL=
 VITE_FILEBROWSER_URL=

src/i18n/en.ts

@@ -62,8 +62,7 @@ export const dict = {
     home: {
       applications: "Applications",
       application: {
-        adminPanel: "Admin Panel",
-        punishmentPanel: "Punishment Panel",
+        staffPanel: "Staff Panel",
         gitea: "Gitea",
         wekan: "Wekan",
         filebrowser: "Filebrowser",

src/pages/panel/home.tsx

@@ -10,15 +10,10 @@ export default function HomePage() {
   const applications = createMemo(() =>
     [
       user()?.roles.includes("ADMIN") && {
-        name: t("panel.home.application.adminPanel"),
-        link: import.meta.env.VITE_ADMIN_PANEL_URL,
+        name: t("panel.home.application.staffPanel"),
+        link: import.meta.env.VITE_STAFF_PANEL_URL,
         icon: "/application/minecraft.webp",
       },
-      {
-        name: t("panel.home.application.punishmentPanel"),
-        link: import.meta.env.VITE_PUNISHMENT_PANEL_URL,
-        icon: "/favicon.webp",
-      },
       {
         name: t("panel.home.application.gitea"),
         link: import.meta.env.VITE_GITEA_URL,