MyController: Remove SQL queries on start up.
MyController: Change error catching for userQuery method.
MyController: Update error catching.
SQLQuery: Tweak error handling.
MyController: Update conf prompt. 
Updated the 'promptJOptionPane' method which now includes a list of
variables that the user will be prompted with.
MyController: Update 'writeStringToFile';
- Renamed 'saveStringToFile'to 'writeStringToFile'
- Updated error catching to use JOptionPane message dialog.
CSVFilter: Bug fix. 
The filter was unable to open directories that contained file names
without an extension. Added in a check to catch this.
MyController: Rename conf file.