Fixes #100

SequenceIO and KafkaWordCount do not load related jars. Working on this.
Let's use wordcount as example. Currently Application launches WordCount to submit the AppDescription. WordCount does not know what jar to include in AppDescription because WordCount was not given this information. (Remember you did not want this jar information propagated). So AppDescription needs to get this information implicitly somehow. If within AppDescription we assume that this information is available from Application then no implicit loading is needed. This assumes we will *always* launch apps with gear. Safe to assume?