Move default theme into themes directory, make themes directory a thing.

MANIFEST.assets

@@ -5,10 +5,7 @@ include bemani/frontend/static/*.css
 include bemani/frontend/static/*.js
 include bemani/frontend/static/*.gif
 include bemani/frontend/static/*.png
-include bemani/frontend/static/default/*.css
-include bemani/frontend/static/default/*.js
-include bemani/frontend/static/default/*.gif
-include bemani/frontend/static/default/*.png
+graft bemani/frontend/static/themes
 include bemani/frontend/static/components/*.js
 include bemani/frontend/static/controllers/*.js
 include bemani/frontend/static/controllers/admin/*.js

bemani/frontend/app.py

@@ -263,7 +263,7 @@ def jinja2_any(lval: Optional[List[Any]], pull: str, equals: str) -> bool:
 
 
 def jinja2_theme(filename: str) -> str:
-    return url_for('static', filename=f"{config.theme}/{filename}")
+    return url_for('static', filename=f"themes/{config.theme}/{filename}")
 
 
 @app.context_processor