[BUILD] Add and apply Saros/E inspired code style schema to Saros/I

The resulting code is not exactly the same as in Saros/E (formatted and
cleaned up by Eclipse), so the "Reformat Code" command of IntelliJ IDEA
(CTRL+ALT+L) should not be ran on the Saros/Core project.

Change-Id: I0c4ae1e3c1e9ed8fa9688780740e99fb23276bb4
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1578
Tested-by: Jenkins CI
Reviewed-by: Franz Zieris <zieris@inf.fu-berlin.de>