design(verwaltung): Einstellungen und Verwaltung aufgeraeumt

Gemeinsame Navigation fuer Einstellungen und Verwaltung (Verwaltung in
Benutzer und Zugang / Module / Anbindungen gegliedert), einheitlicher
Seitenkopf und Abschnittskarten, Speichern in der Kartenfusszeile.
Menuepunkt 'Administrator' heisst 'Verwaltung'; Seitentitel gleich den
Navigationseintraegen. Kein 'Zurueck zum Dashboard' mehr. Tabellen ohne
waagerechte Seitenscrollleiste; auf dem Handy Auswahlliste statt Liste.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

apps/web/src/messages/en.json

@@ -210,7 +210,7 @@
     "providerDeleteCta": "Delete provider",
     "cancel": "Cancel",
     "smtp": {
-      "title": "SMTP Configuration",
+      "title": "Email delivery",
       "host": "Host",
       "port": "Port",
       "encryption": "Encryption",
@@ -531,7 +531,7 @@
   },
   "admin": {
     "users": {
-      "title": "User Management",
+      "title": "Users",
       "create": "Create User",
       "edit": "Edit User",
       "delete": "Delete User",
@@ -598,7 +598,7 @@
       "cannotDeleteActive": "Cannot delete tenants with active users"
     },
     "ldap": {
-      "title": "LDAP configuration",
+      "title": "Directory (LDAP)",
       "connectionTitle": "Connection settings",
       "serverUrl": "Server URL",
       "baseDn": "Base DN",
@@ -745,7 +745,7 @@
       }
     },
     "customModules": {
-      "title": "Custom modules",
+      "title": "Custom modules for everyone",
       "description": "Add other websites as entries in the sidebar. All users see these shared entries under the chosen category, and a click shows the page right inside Tessera. Personal entries only you can see are added under “Settings → Custom modules”.",
       "create": "Add shared entry",
       "noModules": "No shared entries yet",
@@ -853,7 +853,7 @@
     }
   },
   "adminModules": {
-    "title": "Module Management",
+    "title": "Modules",
     "description": "Activate or deactivate modules",
     "activate": "Activate",
     "deactivate": "Deactivate",
@@ -868,7 +868,7 @@
     "grantsLink": "Grants Matrix",
     "categoriesLink": "Categories",
     "grants": {
-      "title": "Grants Matrix",
+      "title": "Permissions",
       "searchPlaceholder": "Search modules or groups...",
       "emptyModules": "No modules are activated yet. Activate a module under Modules first.",
       "emptyModulesLink": "Go to Modules",
@@ -1985,5 +1985,67 @@
       "countsLabel": "Number of clouds per traffic-light color",
       "open": "Open Nextcloud status"
     }
+  },
+  "controlCenter": {
+    "navLabel": "Settings and administration",
+    "settingsTitle": "Settings",
+    "adminTitle": "Administration",
+    "groups": {
+      "people": "Users and access",
+      "modules": "Modules",
+      "connections": "Connections"
+    },
+    "items": {
+      "account": "Account",
+      "widgets": "Widgets",
+      "calendar": "Calendar",
+      "myLinks": "Custom modules",
+      "desktop": "Desktop app",
+      "users": "Users",
+      "groups": "Groups",
+      "welcomeMail": "Welcome mail",
+      "tenants": "Tenants",
+      "modules": "Modules",
+      "grants": "Permissions",
+      "categories": "Categories",
+      "sharedLinks": "Custom modules for everyone",
+      "directory": "Directory (LDAP)",
+      "mailServer": "Email delivery (SMTP)"
+    },
+    "descriptions": {
+      "account": "Profile picture, accent colour and password of your Tessera account.",
+      "widgets": "Content and appearance of the widgets on your dashboard.",
+      "calendar": "Calendars whose events appear in the calendar widget.",
+      "desktop": "Tessera as its own program with an icon in the system tray.",
+      "smtp": "Tessera sends all emails through this server, for example welcome mails, reminders and notifications.",
+      "users": "Accounts, roles and access for everyone who uses Tessera.",
+      "groups": "Groups bundle users so you can grant modules to many people at once.",
+      "tenants": "Organisations that use this Tessera installation separately from one another.",
+      "modules": "Turn modules on or off for everyone. Who may use a module is set under Permissions.",
+      "grants": "Choose which groups may use or manage each module.",
+      "categories": "Decide how modules are grouped and sorted in the sidebar and in the marketplace. The setting applies to all users.",
+      "ldap": "Tessera takes over users and groups from your Active Directory. Tessera only reads there and never changes anything."
+    },
+    "smtp": {
+      "server": "Server",
+      "serverHelp": "Address and login of the outgoing mail server Tessera sends through.",
+      "sender": "Sender and recipients",
+      "senderHelp": "Which address Tessera writes from and where bug reports go.",
+      "check": "Check and save",
+      "checkHelp": "Test the settings before saving them. The test uses the values in this form."
+    },
+    "ldap": {
+      "connectionHelp": "Where Tessera reaches your Active Directory and which account it uses to read it.",
+      "fieldMappingHelp": "Which directory entry is copied into which field of the Tessera account.",
+      "schedule": "Schedule",
+      "scheduleHelp": "How often Tessera syncs with the directory on its own, and whether the connection is switched on. 0 minutes means manual only.",
+      "syncHelp": "Syncs users and groups with the directory right away, without waiting for the schedule."
+    },
+    "welcomeMail": {
+      "textsTitle": "Mail texts"
+    },
+    "calendar": {
+      "sourcesTitle": "Calendar sources"
+    }
   }
 }