Made the session handle the active list

templates/index.html

@@ -1,14 +1,14 @@
 {% include "header.html" %}
 
 <body>
-    <h1 class="container" style="text-align: center">{{ data["title"] }}, {{data["username"].title()}} 
+    <h1 class="container" style="text-align: center">{{ data["title"] }}, {{data["session"]["username"].title()}} 
         <div class="dropdown">
-            <form action="/" method="get" id="test">
+            <form action="/post" method="post" id="test">
             <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenu2" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
-              Lists
+              {{data["session"]["active_id"]}}
             </button>
             <div class="dropdown-menu" aria-labelledby="dropdownMenu2">
-                <button class="dropdown-item" type="submit" value="" id="" name="list">All</button>
+                <button class="dropdown-item" type="submit" value="0" id="" name="list">All</button>
                 {% for id, name in data["list_ids"] %}
                 <button class="dropdown-item" type="submit" value="{{id}}" id="{{id}}" name="list">{{name}}</button>
                 {% endfor %}