redesign, added user system, added api endpoints

core/templates/edit.html

@@ -1,13 +1,11 @@
+{% load static %}
 <!DOCTYPE html>
-<html>
+<html lang="en">
 <head>
-    <title>Edit Transaction</title>
-    <style>
-        body { font-family: system-ui, sans-serif; max-width: 800px; margin: 40px auto; padding: 20px; }
-        .card { background: #f4f4f5; padding: 20px; border-radius: 8px; }
-        button { background: #3b82f6; color: white; padding: 8px 16px; border: none; border-radius: 4px; cursor: pointer; }
-        .cancel { background: #e4e4e7; color: black; text-decoration: none; padding: 8px 16px; border-radius: 4px; display: inline-block; margin-left: 10px; }
-    </style>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Edit Transaction - JAST</title>
+    <link rel="stylesheet" href="{% static 'css/style.css' %}">
 </head>
 <body>
     <h2>Editing: {{ transaction.title }}</h2>