trunk: various small unrelated minor improvements: include copying tree to online-nnet2 directory; remove outdated assert

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@4532 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8
trunk: Adding ConstArpaLm examples to WSJ setup

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@4533 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8
trunk: uncomment local/run_dnn.sh training which was commented out in the previous commit.

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@4534 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8