Merge pull request #81 from acz-icm/master

Universal protocol buffers to pig converter
Removed configuration from maven-release-plugin.
- new constructor with string argument (protobuf class name), which can be called in pig script
- the class is no longer abstract
A little util to create and drop HBase tables
Refactoring - move ZipArchive to package pl.edu.icm.coansys.importers.utils
Adding support for some data types; solving major sonar issues; some refactoring
Unit test for protobuf to pig converter
Merge branch 'master' of git://github.com/CeON/CoAnSys