Make i18n dummy dummy-ify all source english strings (rather than a static list)

conf/locale/config.yaml

 # Configuration for i18n workflow.
 
-locales: 
+locales:
     - en
 
     # More languages we might want someday, these have started on Transifex.
@@ -32,17 +32,6 @@ locales:
 # The locale used for fake-accented English, for testing.
 dummy-locale: eo
 
-# Source files that should be used for generating dummy strings
-dummy_sources:
-    - django-partial.po
-    - django-studio.po
-    - django.po
-    - djangojs-studio.po
-    - djangojs.po
-    - mako-studio.po
-    - mako.po
-    - messages.po
-
 # Directories we don't search for strings.
 ignore_dirs:
     - docs

i18n/config.py

@@ -22,7 +22,6 @@ class Configuration(object):
         'locales': ['en'],
         'segment': {},
         'source_locale': 'en',
-        'dummy_sources': [],
     }
 
     def __init__(self, filename):

i18n/make_dummy.py

@@ -6,8 +6,6 @@
 # two letter language codes reference:
 # see http://www.loc.gov/standards/iso639-2/php/code_list.php
 #
-# po files to turn into dummy strings are specified in configuration file
-#
 # Django will not localize in languages that django itself has not been
 # localized for. So we are using a well-known language (default='eo').
 # Django languages are listed in django.conf.global_settings.LANGUAGES
@@ -19,10 +17,8 @@
 #
 # $ ./make_dummy.py
 #
-# generates output to
-#    CONFIGURATION.get_messages_dir(CONFIGURATION.dummy_locale)
-# (for example,
-#    edx-platform/conf/locale/eo/LC_MESSAGES/)
+# generates output conf/locale/$DUMMY_LOCALE/LC_MESSAGES,
+# where $DUMMY_LOCALE is the dummy_locale value set in the i18n config
 
 import os, sys
 import polib
@@ -63,8 +59,8 @@ def new_filename(original_filename, new_locale):
 if __name__ == '__main__':
     LOCALE = CONFIGURATION.dummy_locale
     SOURCE_MSGS_DIR = CONFIGURATION.source_messages_dir
-    print "Processing source language files into dummy strings:",
-    for source_file in CONFIGURATION.dummy_sources:
-        print source_file,
+    print "Processing source language files into dummy strings:"
+    for source_file in CONFIGURATION.source_messages_dir.walkfiles('*.po'):
+        print '   ', source_file.relpath()
         main(SOURCE_MSGS_DIR.joinpath(source_file), LOCALE)
     print