Quell Test Warnings

:fork_and_knife: There are two parts to this pull request. One is code related:

Set config.il18n.enforce_available_locales to false. This commit takes a stance on config.il18n.enforce_available_locales. At this time, multiple locales are not being handled. If, in the future, multiple locales are needed, this should get set to true.

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The second is dev environment related. I had been getting warnings from PhantomJS like:

``` text
2014-01-28 16:18:48.730 phantomjs[22745:507] CoreText performance note: Client called CTFontCreateWithName() using name "Helvetica Neue" and got font with PostScript name "HelveticaNeue". For best performance, only use PostScript names when calling this API
```

They are a _bit_ annoying. By updating PhantomJS, it removes the warning. If you are on OS X and using homebrew, a simple `brew update && brew reinstall phantomjs` should suffice.