Save FAQ entry from paulp/scala-faq

Take the source of [this wiki page](https://github.com/paulp/scala-faq/wiki/Initialization-Order) together with the template of [this other FAQ entry](https://raw.github.com/scala/scala.github.com/master/tutorials/FAQ/finding-implicits.md).

Paul Phillips wants to transfer that repo, and Simon Schäfer suggested moving this here:
https://groups.google.com/d/msg/scala-internals/wW7FOPwAYiU/RUet7R18URsJ