One-liner fix for part of regression of nodes UI translation (since new pynodes): add menu entries are translated again.

The sockets' names remain untranslated currently, investigating whether this can safely be fixed at this stage too...

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@56489 954f8c5b-7b00-dc11-b283-0030488c597c