fix create_sample.sh dummy sample data generator
fixed a bug in prepared dict. Will try on full data
training cs acoustic models with bigram LM
Merge branch 'master' into fix_czech_training

Conflicts:
	egs/kaldi-vystadial-recipe/s5/conf/train_conf.sh
	egs/kaldi-vystadial-recipe/s5/local/prepare_cmu_dict.sh
	egs/kaldi-vystadial-recipe/s5/local/run_cs_transcriptions.sh
	egs/kaldi-vystadial-recipe/s5/local/vystadial_create_LMs_dict.sh
polishing