Canceling Security Dialog should cause any app or applet to exit.

A.) For non-jnlp applet, (redundant) sandboxed warning dialog will popup after clicking "cancel" on certs warning dialog.

Steps to reproduce:
1. Load any signed non-jnlp applet, click "cancel" button on certs warning dialog.
2. If you see a sandboxed warning dialog show up, then the issue is reproduced.

Note:
For signed jnlp-applet or javaws app, applet/app will abort right away after we click "cancel.

Also:
B.) If SecuritySettings prevent granting Trust to signed or self signed applets, any applet requesting all-permissions should block with appropriate messaging (not run in the sandbox)

Steps to reproduce:
1.) unselected the option: "Allow user to grant permissions to signed content" or "Allow user to grant permissions to content from an untrusted authority"
2.) launch a traditional (non-jnlp applet) self-signed applet.

There will be a dialog telling user code will be treated as unsigned.