Usability improvements in StartTeamWindow

- Enlarge the window's width so a larger part of the path will fit in the TextBox.

- Apply the existing path to the BFilePanel before browsing. It improve
usability when you paste a path or type a new one in the TextBox
then click on the browse button to choose the application
or fine tune the directory.

Please not that it is a best effort feature : if the file or the directory does
not exist, the BFilePanel will fallback to the old behavior :
showing the previously selected file/directory in the session
(or home directory).

Change-Id: I504a1ec72f9f7a236e2e37039961fddc58218eae
Reviewed-on: https://review.haiku-os.org/672
Reviewed-by: Rene Gollent <[email protected]>

src/apps/debugger/user_interface/gui/utility_windows/StartTeamWindow.cpp

@@ -90,7 +90,7 @@ StartTeamWindow::_Init()
 			.Add(fStartButton)
 		.End();
 
-	fTeamTextControl->SetExplicitMinSize(BSize(200.0, B_SIZE_UNSET));
+	fTeamTextControl->SetExplicitMinSize(BSize(300.0, B_SIZE_UNSET));
 	fGuideText->SetExplicitMaxSize(BSize(B_SIZE_UNLIMITED, B_SIZE_UNSET));
 
 	fStartButton->SetTarget(this);
@@ -127,6 +127,9 @@ StartTeamWindow::MessageReceived(BMessage* message)
 				fBrowseTeamPanel->SetMessage(message);
 			}
 
+			fBrowseTeamPanel->SetPanelDirectory(fTeamTextControl->TextView()
+					->Text());
+
 			fBrowseTeamPanel->Show();
 			break;
 		}