IDEA/Gradle improvements

Change-Id: I0d430e484e16cc671e24620db88c19008d201a1c
Reviewed-on: http://gerrit.dmdirc.com/3861
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager
EventBus logging.

Change-Id: I65dfb318fd8eebc784a8703b43fd0c565fcc88fb
Reviewed-on: http://gerrit.dmdirc.com/3854
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>