MARMOTTA-499: replaced mime-utils to detect resources' mimetype
MARMOTTA-499: added test, both at the service and webservice level
MARMOTTA-499: remove usage of java nio, since the tika fallback was always used anyway
MARMOTTA-499: added more testing
MARMOTTA-499: remove debug logging
Merge branch 'develop' into MARMOTTA-499
Merge branch 'MARMOTTA-499' into develop