Add logout link in sidebar

web/src/main/kotlin/com/wbrawner/twigs/web/user/UserWebRoutes.kt

@@ -37,6 +37,14 @@ fun Application.userWebRoutes(userService: UserService) {
                 }
             }
         }
+
+        route("/logout") {
+            post {
+                call.sessions.clear<CookieSession>()
+                call.respondRedirect("/")
+            }
+        }
+
         route("/register") {
             get {
                 call.respond(MustacheContent("register.mustache", RegisterPage()))

web/src/main/resources/templates/partials/sidebar.mustache

@@ -40,13 +40,12 @@
                 About Twigs
             </a>
         </li>
-        TODO: Implement logout
-        <li class="list-item">
-            <a href="/logout">
-                Logout
-            </a>
-        </li>
         -->
+        <li class="list-item">
+            <form action="/logout" method="post">
+                <input type="submit" value="Logout"/>
+            </form>
+        </li>
         <li class="list-item">
             <a href="https://github.com/wbrawner/twigs">
                 Source Code