This is a fix for issue #1 "initial codeset does not correspond with guides"

The solutions for the MongoDB and JPA parts of the tutorial has been removed from the *initial* directory.

The first two pages of the tutorial include instructions on how to setup a MongoDB and a JPA backend respectively. However, when looking at the code in the *initial* directory, the steps described have already been added to the source, which means that there is no work left for the student. In this pull request, the actions described in the tutorial (integration tests, Spring configuration, annotations, dependencies, etc) has been deleted from the *initial* directory so that the students can do them themselves.