Update bootstrap data, disallow `repeat()&restart()`, enhance gen_uniq

Update DA annotations of bootstrap data to correspond with recent HDC SLU changes.
Make `repeat()` and `restart()` DAI mutually exclusive, simplify their rules.
Improve `gen_uniq` script to be able to easily switch outputting of utterances and/or their abstractions and/or corresponding dialogue acts.
Merge pull request #81 from jakub-stejskal/bootstrap_update

Update bootstrap data, disallow repeat()&restart(), enhance gen_uniq