Add node search

[IlgarLunin]

The idea is - user should press ctrl+f or whatever key sequence. Tool pops up, user enters pattern and presses find. Tool then fills itself with node references entries. User can click on entry to jump to specific node

[excitedbox]

I think there should always be a node search with an auto focus. It could be used like a code completion. As you start typing a nodes name it pops up a box of suggestions so you quickly insert the right nodes. It would allow much faster development in my opinion.