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

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>