DDBNEXT-575: add new test cases and configure logging for test env.
DDBNEXT-575: implement the test and new method
DDBNEXT-575: implement addFavorite
DDBNEXT-575: after create wait for 3 seconds to fetch the favorites folder.

  The findFolderByTitle test fails, when we try to find a folder by its title
  after we created it. By waiting 3 seconds(arbitary number), when we try
  to find it again  it works.
DDBNEXT-575: disable test

    not yet implemented method
Merge branch 'develop' of https://github.com/Deutsche-Digitale-Bibliothek/ddb-next into develop
Merge branch 'feature/DDBNEXT-575' into develop