devilry_settings: Moved the template context from apps.theme.
devilry_settings...templatecontext: Removed unused variables.
apps.theme: Removed.

Nothing left in the app.
devilry_settings.templatecontext: Fixed indent.
devilry_settings: Removed DEVILRY_THEME_URL setting.
devilry_settings: Removed the DEVILRY_*_NO_PERMISSION_MSG settings.

No longer in use.
devilry_frontpage: Usable (not styled).