Recommendation Tracker Code

Do a null check to see if the main window has been initiated when shutting down.
Fix for bug 2800517.

Disable OK or Save button when required fields are empty.

Replaced displayWarningMessageBool with displayWarningMessage.

Replaced GlobalUITools.displayWarningMessageBool() with displayWarningMessage() which has only one button to close the dialog. The new function eliminates the unused "don't show this again" check box functionality.
This fulfills Feature Request 2797570 - "Need single button warning dialog."

Adjusted widgets so that the description boxes will expand when the window is enlarged.
Fix for bug 2797563.

Remved erroneous "use mysql" line.

Updated for the next release.

Changed the layout so that the cpe panel won't drop to the bottom when hiding comments.

Added hide comment check box and functionality.

Fixed bug 2797075 && 2791383: Files are deleted during sync/update and can be rolled back if something goes crazy
Fixed bug 2798241: Can start up with no selected application now

The majority of the code changes/additions deal with the ability to delete files from the filesystem during a sync/update.
Also, these files can be "rolled back" to stay in line with the database and the xml instance document if an error occurs.

I added code to handle deletion of FileType objects that may be referenced by other objects.