FEATURE: fully keyboard implementation

[kalle07]

using arrow keys inside nodes
using TAB key inside node
dont push enter to take over (do it like excel)
recognize coma as point

if i hit lets say load model and see the list
lets say i have 100 models i can search yes but i cant scroll untill the end
if i close to the node i cant scroll even 10 models

my list is long ^^