All theme files elevated to app directory.

cara/apps/calculator/__init__.py

@@ -229,7 +229,7 @@ def make_app(
     calculator_templates = Path(__file__).parent / "templates"
     templates_directories = [cara_templates, calculator_templates]
     if theme_dir:
-        templates_directories.insert(0, theme_dir / 'templates')
+        templates_directories.insert(0, theme_dir)
     loader = jinja2.FileSystemLoader([str(path) for path in templates_directories])
     template_environment = jinja2.Environment(
         loader=loader,

cara/apps/calculator/__main__.py

@@ -36,7 +36,6 @@ def main():
     if theme_dir is not None:
         theme_dir = Path(theme_dir).absolute()
         assert theme_dir.exists()
-        assert (theme_dir / 'templates').exists()
     app = make_app(debug=args.no_debug, calculator_prefix=args.prefix, theme_dir=theme_dir)
     app.listen(args.port)
     IOLoop.instance().start()