Update site branding and partnership information

Remove Nostra branding from the header and add partnership text to the footer.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 069d4324-6c40-4355-955e-c714a50de1ea
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/3df548ff-50ae-432f-9be4-25d34eccc983/069d4324-6c40-4355-955e-c714a50de1ea/LZrXNFV

client/src/pages/Home.tsx

@@ -21,14 +21,13 @@ export default function Home() {
       <header className="bg-white border-b border-gray-200 sticky top-0 z-50">
         <div className="max-w-7xl mx-auto px-6 py-4">
           <div className="flex items-center justify-between">
-            <div className="flex items-center space-x-6">
+            <div className="flex items-center">
               <img 
                 src="/attached_assets/logo_black_1759162717640.png" 
                 alt="SAPIENS" 
                 className="h-6 w-auto"
                 data-testid="logo-sapiens"
               />
-              <span className="text-sm text-gray-600 font-medium">Nostra</span>
             </div>
             
             <div className="flex items-center space-x-4">