commitmonitor Code

Enable/Disable the toolbar buttons according to the selection state.

Implement dialog resizing.

* use the correct icon for "show diff"
* Only change the tray icon if really something has changed, not every time the data needs to be saved.

Add a toolbar for the various commands.

Fix compiler warnings.

Use predefined messages instead of using RegisterWindowMessage()

Don't select a log entry when selecting a tree item.

Only update the view if the data *really* has changed.

* use a better, reentrant reader/write section class
* refresh the UI in a timer interval

After deleting items, automatically select the previous item.