index.scala - missing PDFs

[alexander-myltsev]

Some links are broken. E.g.: http://lampwww.epfl.ch/~rompf/thesis_120716.pdf . Please, double-check links.

[alexander-myltsev]

Broken links at https://github.com/scala-lms/tutorials/blob/master/src/test/scala/lms/tutorial/02_basics.scala as well