Disambiguation-Author relaunched

General:
* organizing imports
* bugfixes
* (many) comments in english

Disambiguation-Author:
* UDFs for the efficient and convenient extraction of metadata (paratrimized selection of metadata fileds, languages, normalization)
* Auxiliar classes for normalization
* Pig scripts and UDFs for several processing strategies (exhaustive, approximate) 
* Pig scripts scripts/Apache Oozie workflows to use AND strategies
* Micro integration tests for testing main Pig scripts and subroutines
* First approach to measuring time efficiency (profiling)