...
4) Edit the profile of account in which you are logged in, and set the locale to your new locale. You can do this from the profile screen (see screen grab below)
After your locale is switched the labels you have defined in the local properties file should then be in use. As seen in the following screen shot. Note, not all labels have been translated (and the ones that have are somewhat bad), but it conveys the point.
!cnexample|thumbnail!