Add Request Parameter to allow skipping of alternate tokens (posInc == 0)

This pull requests adds a query parameter that allows to enable the Tagger skip alternate tokens emitted by the query time Analyzer.

As skipping those token might be problematic for some Analyzer configurations the by default the Tagger now throws UnsupportedTokenExceptions when encountering those.

Even if this feature is enabled a one time WARNING message is logged that tells the user that he should check Analyzer configurations for possible problems.