Adding new TTS preprocessing replacements

Based on a manual inspection of the stops list
One more.
More fixes (thanks David for "Hewlett")
Merge branch 'master' into tts_preprocessing_fixes
"Kam chcete jet?" should sound less weird.
Fix in onlineupdate function if the file does not exists.
Testing HTK ASR with the _SIL_ in the LM.
Fix in ASR text preprocessing.
Merge branch 'master' of github.com:UFAL-DSG/alex
Fix in ASR text preprocessing.
Expanding EN phonetic dictionary.
Merge branch 'master' of github.com:UFAL-DSG/alex
Merge pull request #9 from UFAL-DSG/online_update_fix

The online model update will not fail if the remote file does not exist
Using unicode for config. Merge.
Fixing using HTK ASR with the _SIL_ in the LM.
Merge branch 'master' of github.com:UFAL-DSG/alex
Removing a silence word from the HTK scripts.
Fixed building the hdecode dict.
Added download link to Flite
Merge branch 'master' of github.com:UFAL-DSG/alex