Added a QTextEdit for art descriptions.
Also added the ability to save and load them from the database. Changing of the description field also triggers a unsaved changes prompt.
Implemented the last remaining tag in the TagSelectDialog to be automatically selected when confirming the dialog.
Improved logging of DB connection and selected tags
Made the predicted url in TagImportDialog clickable and open the url in a browser with QDesktopServices.
Also fixed the source url in window.py to use QDesktopServices