Split up database-related code into 3 new modules
Split up some __main__.py code into server.py
Use Database class for archive database; Some fixes
Add MainDatabase class
Add availability to use PostgreSQL database as an archive
Minor fix
Add db_path and db_path_variable in parser_config
Add availability to save articles in JSON format
Move parsers to parsers directory
Merge branch 'master' of https://github.com/SPython/tech-parser