Add on window selection refresh.

The changes in PBViewController is only there to
supress a compiler warning.

PBGitWindowController.m

@@ -9,6 +9,7 @@
 #import "PBGitWindowController.h"
 #import "PBGitHistoryController.h"
 #import "PBGitCommitController.h"
+#import "PBGitDefaults.h"
 
 @implementation PBGitWindowController
 
@@ -137,6 +138,12 @@
 	[[NSAlert alertWithError:error] beginSheetModalForWindow: [self window] modalDelegate:self didEndSelector:nil contextInfo:nil];
 }
 
+- (void)windowDidBecomeKey:(NSNotification *)notification
+{
+	if (self.viewController && [PBGitDefaults refreshAutomatically]) {
+		[(PBViewController *)self.viewController refresh:nil];
+	}
+}
 
 #pragma mark -
 #pragma mark Toolbar Delegates