allowset-855766: Remove 'allowset' to make 'pref set' work

The pref set command was failing, because the redirect option wasn't
working. This removes the allowset mechanism which makes things a lot
simpler.

Signed-off-by: Joe Walker <jwalker@mozilla.com>
jsterm-911456: Double check destroy functions

Make sure they're killing only the things they should.

Signed-off-by: Joe Walker <jwalker@mozilla.com>
jsterm-911456: Update RDP connector

Signed-off-by: Joe Walker <jwalker@mozilla.com>