Fixing template syntax

A quote was removed in a recent translation bug fix that causes
a template syntax exception resulting in an error on the page when
attempting to create a pseudo folder. This fix allows for pseudo
folder creation again.

Closes-Bug: #1382191
Change-Id: Icd94b601205657985a015a4ef7527878586a189f
Merge branch 'master' of https://github.com/openstack/horizon