Revert "script wip"

This reverts commit 4d1ac359adca9054734ec2b34ec8460ea72a9c72.

No more __sandboxPrivilege
Revert "privileged script; attach fake priv to privilaged scripts"

This reverts commit 23305f48504ec9035e9d9a67112065126f6b31e5.

Conflicts:
	content/base/src/Sandbox.cpp
	content/base/src/nsScriptLoader.cpp

No more __sandboxPrivilege

Keeping Sandbox.privileges
    Revert part of "script privileged"

    This reverts part of commit 7ade553323a22b0e0ded0462bd7335e8f1fe3d22

    Give page scripts the privilege corresponding to the page principal