Added ability to edit user info

web/templates/edit-user.html

@@ -0,0 +1,13 @@
+{{define "page-content"}}
+<form>
+    <input name="username" type="text" value="{{.UserName}}" />
+    <input name="first-name" type="text" value="{{.FirstName}}" />
+    <input name="last-name" type="text" value="{{.LastName}}" />
+
+    <input name="old-password" placeholder="Altes Passwort" type="password" />
+    <input name="password" placeholder="Neues Passwort" type="password" />
+    <input name="password2" placeholder="Wiederholen" type="password" />
+
+    <input type="submit" hx-post="/update-user/" hx-target="#page-content" />
+</form>
+{{end}}