No longer stripping dots from downloaded filenames

Previously, the filename (which comes from our database
that validates the filenames at store-time) was
being passed through defaultfilters.slugify and that
was removing dots from the filenames, which was
undesirable.  Also added a unit test for this.

Change-Id: I4fccf2c3e065be1c1ae3826ab5d4bded359db251
Closes-Bug: #1379455
Updated from global requirements

Change-Id: I1c6cd4e211e34e54ac5f9da76bcb93c1a5a55e35
Imported Translations from Transifex

Change-Id: I25451b779ba7e080b7252c2ba679327b45770616
Merge "No longer stripping dots from downloaded filenames"
Merge "Imported Translations from Transifex"
Merge "Updated from global requirements"
Merge branch 'master' of https://github.com/openstack/horizon