[Localization] Project name change

[Chris Leonard]

I've changed the name of "OLPC Content" to "OLPC PR Website" to more
accurately reflect it's content.  IMHO, it is one of the last projects
that should be worked on (I'm not sure OLPC is even using it any more,
but I will check).  I've noticed that the name OLPC Content seemed to
attract a lot of activity from new users.

For an explanation of our projects, please see:
http://wiki.sugarlabs.org/go/Translation_Team/Pootle_Projects

cjl