Change storage of ngram occurrences from interval pairs to single offets.
Intervals insertion tweaks to keep RAM down.
Reduce size of hash to 16 bits, reduced ram to acceptable 2GB.
Remove dead code
Added PositionInTune to search result.
Add interval 'redemption' in fuzzy string search.
Also tweak numbers for ngram search stages.
Chopped out all the startEndInterval stuff! Now ngrams just counting. Ready for trial deployment. Down to about 1.3GB.