Revert "Remove ThemingAware storage mixins and ComprehensiveThemeFinder."

This reverts commit 266f593d.

cms/envs/common.py

@@ -520,6 +520,7 @@ STATICFILES_STORAGE = 'openedx.core.storage.ProductionStorage'
 # List of finder classes that know how to find static files in various locations.
 # Note: the pipeline finder is included to be able to discover optimized files
 STATICFILES_FINDERS = [
+    'openedx.core.djangoapps.theming.finders.ComprehensiveThemeFinder',
     'django.contrib.staticfiles.finders.FileSystemFinder',
     'django.contrib.staticfiles.finders.AppDirectoriesFinder',
     'pipeline.finders.PipelineFinder',

cms/envs/devstack.py

@@ -41,6 +41,7 @@ STATICFILES_STORAGE = 'openedx.core.storage.DevelopmentStorage'
 
 # Revert to the default set of finders as we don't want the production pipeline
 STATICFILES_FINDERS = [
+    'openedx.core.djangoapps.theming.finders.ComprehensiveThemeFinder',
     'django.contrib.staticfiles.finders.FileSystemFinder',
     'django.contrib.staticfiles.finders.AppDirectoriesFinder',
 ]

lms/envs/common.py

@@ -1178,6 +1178,7 @@ STATICFILES_STORAGE = 'openedx.core.storage.ProductionStorage'
 # List of finder classes that know how to find static files in various locations.
 # Note: the pipeline finder is included to be able to discover optimized files
 STATICFILES_FINDERS = [
+    'openedx.core.djangoapps.theming.finders.ComprehensiveThemeFinder',
     'django.contrib.staticfiles.finders.FileSystemFinder',
     'django.contrib.staticfiles.finders.AppDirectoriesFinder',
     'pipeline.finders.PipelineFinder',

lms/envs/devstack.py

@@ -99,6 +99,7 @@ STATICFILES_STORAGE = 'openedx.core.storage.DevelopmentStorage'
 
 # Revert to the default set of finders as we don't want the production pipeline
 STATICFILES_FINDERS = [
+    'openedx.core.djangoapps.theming.finders.ComprehensiveThemeFinder',
     'django.contrib.staticfiles.finders.FileSystemFinder',
     'django.contrib.staticfiles.finders.AppDirectoriesFinder',
 ]

openedx/core/storage.py

@@ -4,9 +4,11 @@ Django storage backends for Open edX.
 from django.contrib.staticfiles.storage import StaticFilesStorage, CachedFilesMixin
 from pipeline.storage import PipelineMixin, NonPackagingMixin
 from require.storage import OptimizedFilesMixin
+from openedx.core.djangoapps.theming.storage import ComprehensiveThemingAwareMixin
 
 
 class ProductionStorage(
+        ComprehensiveThemingAwareMixin,
         OptimizedFilesMixin,
         PipelineMixin,
         CachedFilesMixin,
@@ -20,6 +22,7 @@ class ProductionStorage(
 
 
 class DevelopmentStorage(
+        ComprehensiveThemingAwareMixin,
         NonPackagingMixin,
         PipelineMixin,
         StaticFilesStorage