SoftwareUpdater improvements and fixes

Improvements:
* Close box on window tab replaces cancel button
* Final window quit button made default
* Window frame and details checkbox option saved to settings file and
restored upon start of application
Bug fixes:
* Fixed strings not truncating properly in scroll view
* Application was unnecessarily aborting the Haiku shutdown process
* Window corner grabber now not shown when window is not resizable

SoftwareUpdater version 1.0.1

Changes:
-Bug fix in output when no network is detected on x64. Fixes #13345
-Do not display a final notification if SoftwareUpdater is front most
window (redundant since the same message is displayed in window)
-Remove the "Continue anyway" prompt when no network detected
-Implement the --verbose command option:
For update and full-sync modes, only displays Terminal output when
--verbose is used
For check mode show output on notifications
-Replace the "Show more details" popup menu with a check box
-Replace fprintf commands with other non-formatting commands if no
formatting is needed (thanks Axel)
-Display a dialog and button to open the Repositories preflet if no
repositories are enabled
-Do not display confirmation to quit until after downloads have started

SoftwareUpdater updates

*Added a check-only option to check for updates and display a
notification when updates are available.
*Added argv commands to specify an action when using Terminal or
BRoster to launch app: commands [update | check | full-sync]
*Draw a download progress bar on the package icon
*Increased the size of the package icon to improve the bar look
*Added package counts to each list category

Updates to SoftwareUpdater

Committing work done to make SoftwareUpdater functional. The
application will find available updates, confirm with the user to
apply updates, download packages and apply them. There are a few bugs
and features remaining to be fixed and completed:

*Bug with window resizing after packages start downloading- list view
does not resize down
*Tooltips to be implemented (showing repository and other details)
*Proper handling of no network or failed repository connections
*Testing of the problem solver
*Mode to only check for availability of updates and post notification
with results