Updated Git ignore rules to exclude artifacts generated by Eclipse IDE.

Signed-off-by: Paulo Pires <pjpires@gmail.com>
Added Maven execution to clean-up Lucene folder generated while running Cassandra tests.

Signed-off-by: Paulo Pires <pjpires@gmail.com>
cassandra-thrift is already included in cassandra-all dependency.

Signed-off-by: Paulo Pires <pjpires@gmail.com>
Cleaned-up in-project dependencies versioning to be easier to update for each release.
Just missing kundera-tests project because I'm not sure why there are so many dependencies which are already declared in in-project dependencies (other Kundera modules).

Signed-off-by: Paulo Pires <pjpires@gmail.com>