1. Fix EDKT441 After some modifications and refresh, there will show a dialog for...

1. Fix EDKT441 After some modifications and refresh, there will show a dialog for save all files. The operation of Cancel should not refresh wizard.
2. Fix EDKT442 After some modifications and refresh, there will show a dialog for save all files. The operation of erasing this dialog should be regarded as Cancel, not refresh wizard.
3. Fix EDKT455 The style of menu should be unified
4. Fix EDKT439 After some modifications and exit, there will show a dialog for save all files. The operation of erasing this dialog should be regard as Cancel, not exit wizard.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1851 6f19259b-4bc3-4df7-8a09-765794883524