add config files for PyBabel and update.py

conf/locale/babel.cfg

@@ -0,0 +1,19 @@
+# Extraction from Python source files
+#[python: cms/**.py]
+#[python: lms/**.py]
+#[python: common/**.py]
+
+# Extraction from Javscript source files
+#[javascript: cms/**.js]
+#[javascript: lms/**.js]
+#[javascript: common/static/js/capa/**.js]
+#[javascript: common/static/js/course_groups/**.js]
+# do not extract from common/static/js/vendor/**
+
+# Extraction from Mako templates
+[mako: cms/templates/**.html]
+input_encoding = utf-8
+[mako: lms/templates/**.html]
+input_encoding = utf-8
+[mako: common/templates/**.html]
+input_encoding = utf-8

conf/locale/config

@@ -0,0 +1 @@
+{"locales" : ["en", "fr", "de"]}