Removed uneeded services code.

Signed-off-by: Paulo Pires <pjpires@gmail.com>
Removed uneeded dependencies. Resulting JAR is much smaller.

Signed-off-by: Paulo Pires <pjpires@gmail.com>
Improved build.
We now force Java 6 and Maven 3.0.3+.
Disabled GPG plug-in.

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