FIX:
- function 'test_get_publications_by_author_name' returns a list instead of 2D list

TEST:
- added test unit funtion for 'test_get_publications_by_author_name'

TIDYING:
- Commenting some functions in database class
- Tidying up code in database class
Finish off Friday work. Everything is working now and tested.

FIX:
- Class View: function 'showAuthors', added new arguments for the template. The route is fully functional now

TIDYING:
- Commented the functions we have used in database calss to make it clear for us
- Removed deadcode in database class
- Changed publication topics in moack data