Bugfix: Index not refreshing on manual refresh

The window controller should be calling the content controller's refresh and not the repository's.

PBGitWindowController.m

@@ -153,7 +153,7 @@
 
 - (IBAction) refresh:(id)sender
 {
-	[repository forceUpdateRevisions];
+	[contentController refresh:self];
 }
 
 - (void) updateStatus

PBViewController.h

@@ -26,5 +26,6 @@
 - (void) removeView;
 - (void) updateView;
 - (NSResponder *)firstResponder;
+- (IBAction) refresh:(id)sender;
 
 @end

PBViewController.m

@@ -43,6 +43,10 @@
 {
 }
 
+- (IBAction) refresh: sender
+{
+}
+
 - (NSResponder *)firstResponder;
 {
 	return nil;