Adding new TTS preprocessing replacements

Based on a manual inspection of the stops list
One more.
More fixes (thanks David for "Hewlett")
Foxixed ASR normalisation scripts.
Merge branch 'master' of github.com:UFAL-DSG/alex
Fix ASR EN HTK scripts.
Merge branch 'master' of github.com:UFAL-DSG/alex
Merge branch 'master' of github.com:UFAL-DSG/alex
Merge branch 'master' into tts_preprocessing_fixes
"Kam chcete jet?" should sound less weird.
when getting the transcriptions for building a LM, use only the last (probably) correct transcription.
Merge branch 'master' of github.com:UFAL-DSG/alex
Tuning ASR transcription processing scripts.
Fix in generating LM for PTIcs.
Fix in SLU data preparation.
ASR scoring implicitly ignores non-speech events in WER scoring.
Fix in semantic scoring.
Expanded EN phonetic dict.
Expanded a list of hesitation symbols.
Download directory changed to /download/alex