"added Italian mapping file for DKPro openNLP"
Added Italian openNLP model artifacts in LAP pom.
The mapping file is in /resources, which is a copy of textpro mapping.
Refactored openNLP LAPAccess codes:
a) to use ImplBaseAE (better efficiency).
b) segmenter changed from (generic) iterator segmenter to proper openNLP tokenizer+sentence splitter

Added OpenNLPTaggerIT: openNLP based sent+tokenizer+tagger LAPAccess module.
Merge pull request #256 from gilnoh/master

Italian OpenNLP segmenter (sent & tokens) and POS tagger 
Checked builds, and all tests passes.