Added JsonReporter, ran stylecop, see description

- Added JsonReporter, a template for the JSON report and an interface
for the reporters.
- JsonReporter is not finished. It still need fixing for the output to
MySQL but that part is not included in the executable code yet so it
will just make the *.json files and stop.
- The MySQL DB is created using the script SalesReportsMySQLDatabase.sql
in the main directory (DB-Team-Psychic-Elemental)
- The *.json report files are outputed in the main directory
(DB-Team-Psychic-Elemental) in the folder "Sales reports"