Adjusted documentation for Test Server in ScalaFunctionalTest.md.
Added 'Testing with Specific Web Browser' and 'Testing with ALL Available Web Browsers' documentation in ScalaFunctionalTest.md.
Added 'PlaySpec' documentation in ScalaFunctionalTest.md.
Adjusted Testing Template, View, Model and Controller section to use code examples from code-scalatestplus-play.
Adjusted scope text in the ExampleSpec.