Improves dashboard UI and user management

Enhances the dashboard's visual presentation and user management
functionality.

- Addresses a layout issue by adding overflow hidden to the word cloud container.
- Improves user management form responsiveness on smaller screens.
- Enhances language name display in the pie chart using a dedicated function and ensures correct ISO code display.
- Refines donut chart's center text styling for better readability.
- Fixes geographic map's height and removes attribution for a cleaner look.

app/dashboard/page.tsx

@@ -384,7 +384,7 @@ function DashboardContent() {
       </div>
       {/* Word Cloud and World Map */}
       <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
-        <div className="bg-white p-6 rounded-xl shadow">
+        <div className="bg-white p-6 rounded-xl shadow overflow-hidden">
           <h3 className="font-bold text-lg text-gray-800 mb-4">
             Categories Word Cloud
           </h3>

app/dashboard/users.tsx

@@ -39,15 +39,15 @@ export default function UserManagement({ session }: UserManagementProps) {
   return (
     <div className="bg-white p-6 rounded-xl shadow mb-6">
       <h2 className="font-bold text-lg mb-4">User Management</h2>
-      <div className="flex gap-2 mb-3">
+      <div className="flex flex-col sm:flex-row gap-2 mb-3">
         <input
-          className="border px-3 py-2 rounded"
+          className="border px-3 py-2 rounded w-full sm:w-auto"
           placeholder="Email"
           value={email}
           onChange={(e) => setEmail(e.target.value)}
         />
         <select
-          className="border px-3 py-2 rounded"
+          className="border px-3 py-2 rounded w-full sm:w-auto"
           value={role}
           onChange={(e) => setRole(e.target.value)}
         >
@@ -56,7 +56,7 @@ export default function UserManagement({ session }: UserManagementProps) {
           <option value="auditor">Auditor</option>
         </select>
         <button
-          className="bg-blue-600 text-white rounded px-4"
+          className="bg-blue-600 text-white rounded px-4 py-2 sm:py-0 w-full sm:w-auto"
           onClick={inviteUser}
         >
           Invite