Remove build stuff from remote servers

[MatthiasLohr]

Currently, the koral projects builds the application jar on each remote (master, slave) server. It would be preferable to use a single machine for building (e.g. your local development computer) the jar file and copy it (more specific: the jar-with-dependencies variant) to the remote machines for executions.

Reasons:

• Building software on multiple machines has overhad in CPU time, HDD usage (build environment) and data transfer
• If you want to provide releases here ready for download your environment should also be able to use these releases - instead of forcing the user to build the application himself

Best regards
Matthias