jats_package: author note fix

* Handles more than one note per author.

* Updates tests and removes tests.py which is unnecessary.

Tested-by: Jan Aage Lavik <jan.age.lavik@cern.ch>
Signed-off-by: Georgios Papoutsakis <georgios.papoutsakis@cern.ch>
utils: collapse_initials fix

* Fix to handle more than one spaces between initials.

Signed-of-by: Georgios Papoutsakis <georgios.papoutsakis@cern.ch>
global: more tests added

* Adds test flag to get_record function in elsevier_package
  to not add the FFT tag because the file location
  is enviroment dependent and cannot be used for testing.

Signed-off-by: Georgios Papoutsakis <georgios.papoutsakis@cern.ch>