Refactored multi_decoder with main_decoder for runtime vs. _training_decoders
Refactored multi_decoder with main_decoder for runtime vs. _training_decoders

ufal/neuralmonkey,ufal/neuralmonkey,juliakreutzer/bandit-neuralmonkey,bastings/neuralmonkey,ufal/neuralmonkey,juliakreutzer/bandit-neuralmonkey,ufal/neuralmonkey,bastings/neuralmonkey,bastings/neuralmonkey,bastings/neuralmonkey,ufal/neuralmonkey,juliakreutzer/bandit-neuralmonkey,juliakreutzer/bandit-neuralmonkey,juliakreutzer/bandit-neuralmonkey,bastings/neuralmonkey