Add LTR/RTL tooling for help maintaining sandboxes
"interpolate" is a keyword for pybabel
Explain yo'self.
Merge pull request #6 from singingwolfboy/interpolate-keyword

"interpolate" is a keyword for pybabel
Merge pull request #7 from edx/sarina/tooling-for-sandboxes

Add LTR/RTL tooling for help maintaining sandboxes