Update to sbt 0.13.6-MSERVER-4
Merge pull request #146 from sbt/wip/havocp-mserver-4

Update to sbt 0.13.6-MSERVER-4
Save launch props file if SBT_SERVER_SAVE_TEMPS ne null
Merge pull request #147 from sbt/wip/havocp-save-temps

Save launch props file if SBT_SERVER_SAVE_TEMPS ne null
Add typesafe repos to the server launcher properties
Merge pull request #148 from sbt/wip/havocp-typesafe-repos

Add typesafe repos to the server launcher properties