remove gate activation setter

since it's a bad idea and you should call the gate_function.
Introducing netapi for gatefunction setting
Fixes for field and feed methods
Merge branch 'master' of github.com:joschabach/micropsi2
unrelated: fix link updating
actually replace link in frontend

otherwise a redraw because of different weight/certainty etc will not update the model
If super constructor had to create uid, only
self.uid is set, uid is still None
Enabling link_with_reciprocal for concept nodes,
adding symref
2 additional gate-function params at your disposal
spelling
fix actor nodefunc
Merge pull request #30 from Doik/gate_params

2 additional gate-function params at your disposal
Merge remote-tracking branch 'origin/master' into minecraft_vision