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Comprehensive theming did not work with django templates (used by course wiki). The reason it didn't work was that in order for the theme to work, theme template folder has to be added to django template dirs setting *before* django startup. After django startup, modifying `settings.DEFAULT_TEMPLATE_ENGINE['DIRS']` has no effect, because at that point the template engine is already initialized with a copy of the template dirs list. Instead of running the theme startup code as an autostartup hook, we manually run it *before* `django.setup()`. This is fine because theme startup code doesn't have to do anything else besides modifying some settings and doesn't actually need django to be initialized.
Open edX -------- This is the root package for Open edX. The intent is that all importable code from Open edX will eventually live here, including the code in the lms, cms, and common directories. If you're adding a new Django app, place it in core/djangoapps. If you're adding code that defines no Django models or views of its own but is widely useful, put it in core/lib. Note: All new code should be created in this package, and the legacy code will be moved here gradually. For now the code is not structured like this, and hence legacy code will continue to live in a number of different packages.