Addition of new class to handle all database file reads and writes.
Implementation of the constructors.
Implemented the framework of the DBFile class.
Full implementation of the DBFile class.
Completion of the DBFile class.
Fixed some issue during opening of a database file.
Moving the UI items from the module into a separate class called TUI.
Moved the menu to the TUI class to handle all menu options.
Moved all business code to a separate class.
Fixed small scroll up issue. The most right column was not scrolled up.
Added CC0 licensing information to the source files, to publish everything as public domain software.