Removed references to ScalaToDoList tutorial
Trim surrounding whitespace from xml content
Extracted remaining WS Scala code samples
Merge pull request #2821 from pvlugter/xml-trim

Trim surrounding whitespace from xml content
Merge pull request #2809 from jroper/update-welcome

Removed references to ToDoList tutorials
Merge pull request #2823 from jroper/ws-code-snippets

Extracted remaining WS Scala code samples