Include leven as query processor

[eklem]

For fuzzy search, use idx.DICTIONARY (returning an array of all words in index) and leven to find all words with Levenshtein distanse equal or less than some chosen number and add them to OR-query.

For daq-proc, just add it as lvn (?) and some other module can create the search logic? I.e. norch-vue?

[eklem]

#35