Connect all setools and setoolsgui INFO+ messages and display them on
the statusbar.
Use each tab's analysis/query INFO+ messages and display them on the
"busy" status dialog box.
Still keep the CLI messaging controlled by -v or --debug switches. For some
reason, the root logging had to be DEBUG for this to work, and
only as initialized by basicConfig. Setting a NullHandler to DEBUG level
didn't work either.
Tab renaming methods:
* double click the tab
* context menu on tab bar
Also:
* change initial tab name to include a number based on the total number
of tabs that have been opened.
* add tool tip to tab of the analysis type.
* add explicit close tab function to ensure analysis widgets are deleted.
1. add icons for opening policy and new analysis
2. add shortcuts for copy, cut, paste
3. add filename to apol main window title
4. fix file chooser bug for selecting a policy.
5. improved handling where new analysis is started w/o open policy
