Updated edx packages to the latest releases

requirements/edx/base.txt

@@ -45,8 +45,8 @@ djangorestframework-oauth==1.1.0
 enum34==1.1.6
 edx-ccx-keys==0.2.1
 edx-celeryutils==0.2.4
-edx-drf-extensions==1.2.2
-edx-i18n-tools==0.3.7
+edx-drf-extensions==1.2.3
+edx-i18n-tools==0.3.9
 edx-lint==0.4.3
 # astroid 1.3.8 is an unmet dependency of the version of pylint used in edx-lint 0.4.3
 # when upgrading edx-lint, we should try to remove this from the platform