added possiblity to alter the Coverage Band Details of layers & WCS EO tag
fix GSCoverageEncoder. fix integration some test. TODO run integration tests.
improve versions checking and junit related tests. improve keywords and add lang and vocabulary support. improve junit tests.
fix integration tests with the latest gs 2.5.x
Merge pull request #121 from geosolutions-it/master-coverage-band-details-wcseo

Master coverage band details wcseo