Update application to include favicon, improve user interface, and enhance functionality

Adds a favicon, updates the dashboard by removing the calendar and adding a history card, removes the analytics page, and allows direct photo uploads on the new publication page.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ae4037a0-2a6f-4530-9bac-79b543286bda
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/397bca8c-984f-43ff-841a-10897aeb8140/ae4037a0-2a6f-4530-9bac-79b543286bda/TXBOLMj

client/index.html

@@ -1,8 +1,11 @@
 <!DOCTYPE html>
-<html lang="en">
+<html lang="fr">
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1" />
+    <title>Social Flow - Automatisation des réseaux sociaux</title>
+    <meta name="description" content="Automatisez vos publications Facebook et Instagram avec Social Flow. Génération de contenu par IA, planification et publication automatique." />
+    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
     <link href="https://fonts.googleapis.com/css2?family=Architects+Daughter&family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&family=Fira+Code:wght@300..700&family=Geist+Mono:wght@100..900&family=Geist:wght@100..900&family=IBM+Plex+Mono:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;1,100;1,200;1,300;1,400;1,500;1,600;1,700&family=IBM+Plex+Sans:ital,wght@0,100..700;1,100..700&family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&family=Lora:ital,wght@0,400..700;1,400..700&family=Merriweather:ital,opsz,wght@0,18..144,300..900;1,18..144,300..900&family=Montserrat:ital,wght@0,100..900;1,100..900&family=Open+Sans:ital,wght@0,300..800;1,300..800&family=Outfit:wght@100..900&family=Oxanium:wght@200..800&family=Playfair+Display:ital,wght@0,400..900;1,400..900&family=Plus+Jakarta+Sans:ital,wght@0,200..800;1,200..800&family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&family=Roboto+Mono:ital,wght@0,100..700;1,100..700&family=Roboto:ital,wght@0,100..900;1,100..900&family=Source+Code+Pro:ital,wght@0,200..900;1,200..900&family=Source+Serif+4:ital,opsz,wght@0,8..60,200..900;1,8..60,200..900&family=Space+Grotesk:wght@300..700&family=Space+Mono:ital,wght@0,400;0,700;1,400;1,700&display=swap" rel="stylesheet">

public/favicon.svg

@@ -0,0 +1,21 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100">
+  <defs>
+    <linearGradient id="grad1" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#6366f1;stop-opacity:1" />
+      <stop offset="100%" style="stop-color:#a855f7;stop-opacity:1" />
+    </linearGradient>
+  </defs>
+  
+  <!-- Background circle -->
+  <circle cx="50" cy="50" r="48" fill="url(#grad1)"/>
+  
+  <!-- Social network icon - simplified nodes and connections -->
+  <circle cx="30" cy="35" r="8" fill="white" opacity="0.9"/>
+  <circle cx="70" cy="35" r="8" fill="white" opacity="0.9"/>
+  <circle cx="50" cy="65" r="8" fill="white" opacity="0.9"/>
+  
+  <!-- Connecting lines -->
+  <line x1="30" y1="35" x2="50" y2="65" stroke="white" stroke-width="3" opacity="0.7"/>
+  <line x1="70" y1="35" x2="50" y2="65" stroke="white" stroke-width="3" opacity="0.7"/>
+  <line x1="30" y1="35" x2="70" y2="35" stroke="white" stroke-width="3" opacity="0.7"/>
+</svg>