Updates hqstyle-src submodule.

Issue: http://manage.dimagi.com/default.asp?109042#653787
Submodule PR: https://github.com/dimagi/hqstyle-src/pull/57

![bitly-bigger-monospace](https://cloud.githubusercontent.com/assets/1884902/3095477/1fedb680-e5c8-11e3-867a-864e06e2646b.png)

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