Updated flow for creating new STARRs.
Updated flow for creating new STARRs.

* SHA1's are deleted when creating new STARR builds.
* SHA1's are also deleted if new fjbg/forkjoin/jline jars are made.
* Normal push/pull flow should continue as normal with less frustration.

martijnhoekstra/scala,lrytz/scala,jvican/scala,martijnhoekstra/scala,slothspot/scala,slothspot/scala,jvican/scala,shimib/scala,scala/scala,lrytz/scala,jvican/scala,martijnhoekstra/scala,slothspot/scala,martijnhoekstra/scala,shimib/scala,slothspot/scala,scala/scala,felixmulder/scala,jvican/scala,lrytz/scala,felixmulder/scala,shimib/scala,felixmulder/scala,lrytz/scala,martijnhoekstra/scala,martijnhoekstra/scala,scala/scala,felixmulder/scala,jvican/scala,lrytz/scala,slothspot/scala,felixmulder/scala,slothspot/scala,felixmulder/scala,slothspot/scala,shimib/scala,felixmulder/scala,scala/scala,shimib/scala,jvican/scala,jvican/scala,scala/scala,scala/scala,lrytz/scala,shimib/scala