Synchronize NoScript with Firefox Sync

To enable NoScript synchronization via Firefox Sync go to about:config (type this in URL bar) and change noscript.sync.enabled to true.

Make NoScript permission toggle permanent

This also works if you've set 'Left clicking on NoScript toolbar button toggles permissions...'

CTRL + SHIFT + \ (backslash) toggles allowance status for the current top-level site temporarily by default, to make it permanent set the about:config noscript.toggle.temp preference to false.