feat: add howtoplay and about routes with placeholder templates

app.py

@@ -7,6 +7,8 @@ import tornado.web
 from db import get_engine, get_session_factory, init_db
 from handlers.main import MainHandler
 from handlers.game import GameHandler
+from handlers.howtoplay import HowToPlayHandler
+from handlers.about import AboutHandler
 from handlers.api import (
     CategoriesHandler,
     NewGameHandler,
@@ -22,6 +24,8 @@ def make_app(session_factory=None):
         [
             (r"/", MainHandler),
             (r"/game", GameHandler),
+            (r"/howtoplay", HowToPlayHandler),
+            (r"/about", AboutHandler),
             (r"/api/categories", CategoriesHandler),
             (r"/api/game/new", NewGameHandler),
             (r"/api/game/([^/]+)", GameStateHandler),