Fix Transifex configuration so we can merge translations

.tx/config

@@ -43,6 +43,18 @@ source_file = conf/locale/en/LC_MESSAGES/messages.po
 source_lang = en
 type = PO
 
+[edx-platform.underscore]
+file_filter = conf/locale/<lang>/LC_MESSAGES/underscore.po
+source_file = conf/locale/en/LC_MESSAGES/underscore.po
+source_lang = en
+type = PO
+
+[edx-platform.underscore-studio]
+file_filter = conf/locale/<lang>/LC_MESSAGES/underscore-studio.po
+source_file = conf/locale/en/LC_MESSAGES/underscore-studio.po
+source_lang = en
+type = PO
+
 [edx-platform.wiki]
 file_filter = conf/locale/<lang>/LC_MESSAGES/wiki.po
 source_file = conf/locale/en/LC_MESSAGES/wiki.po