Link Manager 0.9.0 - Finished reworking loading routines

I've finished reworking the loading routines to use a single SwingWorker instead of multiple. It still checks for an update to the program via a separate SwingWorker, but the download and load routines are done.

What's Changed

• 1 revamp saving and loading database routines by @Mosblinker in #79
• 1 revamp saving and loading database routines by @Mosblinker in #82

Full Changelog: 0.8.0...0.9.0