Refactor project settings and other code cleanup

[gbeane]

Pull Request: Refactor Settings Dialog and Related Improvements

Summary

This pull request introduces a refactor of the JABS settings dialog, along with related improvements and code cleanup. The primary focus is on modularizing the settings dialog architecture and removing unused code.

Key Changes

1. Settings Dialog Refactor

• SettingsDialog is now an abstract base class, providing a foundation for specialized settings dialogs.
• JabsSettingsDialog: New dialog for application-wide (JABS) settings (currently just enabling/disabling session tracking, which has been removed from the JABS menu).
• ProjectSettingsDialog: New dialog for project-specific settings (former functionality contained in SettingsDialog).

2. Session Tracking Setting

• The "Enable Session Tracking" option has been moved from the JABS menu to the new JabsSettingsDialog to avoid cluttering the menu with a rarely used setting (and to provide inline documentation)

3. Other Cleanup

• Removed unused utility functions and cleaned up related imports.
• Improved internal documentation and code comments.

Additional Notes

• The settings dialog system is now more extensible, making it easier to add new settings groups and dialogs in the future.
• The user experience for managing both application and project settings is improved, with a more consistent and discoverable interface.

Testing

• Verified that both JabsSettingsDialog and ProjectSettingsDialog open and save settings as expected.
• Confirmed that session tracking can be enabled/disabled via the new dialog.
• Ensured that removed utilities are not referenced elsewhere in the codebase.