Use the latest i18n-tools to reduce bogus problem reports

requirements/edx/github.txt

@@ -81,7 +81,7 @@ git+https://github.com/edx/XBlock.git@xblock-0.4.4#egg=XBlock==0.4.4
 -e git+https://github.com/edx/edx-submissions.git@0.1.3#egg=edx-submissions==0.1.3
 -e git+https://github.com/edx/opaque-keys.git@27dc382ea587483b1e3889a3d19cbd90b9023a06#egg=opaque-keys
 git+https://github.com/edx/ease.git@release-2015-07-14#egg=ease==0.1.3
-git+https://github.com/edx/i18n-tools.git@v0.1.4#egg=i18n-tools==v0.1.4
+git+https://github.com/edx/i18n-tools.git@v0.2#egg=i18n-tools==v0.2
 git+https://github.com/edx/edx-oauth2-provider.git@0.5.8#egg=edx-oauth2-provider==0.5.8
 git+https://github.com/edx/edx-val.git@0.0.8#egg=edxval==0.0.8
 -e git+https://github.com/pmitros/RecommenderXBlock.git@518234bc354edbfc2651b9e534ddb54f96080779#egg=recommender-xblock