Added Greek to the languages.
Added the Greek language to Addic7ed's provider.
Added __hash__ implementation for the Language object in order for it to be located correctly in dict and so on.
Remove the doctest execution from Addic7ed's test because ther's no doctest in the module yet.
Ongoing development of the Addic7ed's provider. Currently few helper method got implementation.
Added tests for new utils method.
Finished the implementation of strip_white_spaces. And added another test on the way.