Bump edx-i18n-tools version

Bump from 0.4.4 to 0.4.5 (no change for this repo, just useful for
downstream repos to not be pinned at 0.4.4).

Also bump ora2 release version to 2.1.16

requirements/base.txt

 # edX Internal Requirements
-edx-i18n-tools==0.4.4
+edx-i18n-tools==0.4.5
 edx-submissions>=2.0.12,<3.0.0
 git+https://github.com/edx/django-rest-framework.git@1ceda7c086fddffd1c440cc86856441bbf0bd9cb#egg=djangorestframework==3.6.3
 git+https://github.com/edx/XBlock.git@xblock-1.0.1#egg=XBlock==1.0.1

setup.py

@@ -34,7 +34,7 @@ def load_requirements(*requirements_paths):
 
 setup(
     name='ora2',
-    version='2.1.15',
+    version='2.1.16',
     author='edX',
     url='http://github.com/edx/edx-ora2',
     description='edx-ora2',