Also delete target/ dirs when 'clean'-ing

git-svn-id: http://svn.bigcat.unimaas.nl/bridgedb/trunk@727 e3f1d335-44b1-4163-9530-9b341189ae98
Bumped the version for the upcoming release

git-svn-id: http://svn.bigcat.unimaas.nl/bridgedb/trunk@728 e3f1d335-44b1-4163-9530-9b341189ae98
Updated the MANIFEST.MF files for the upcoming release

git-svn-id: http://svn.bigcat.unimaas.nl/bridgedb/trunk@729 e3f1d335-44b1-4163-9530-9b341189ae98