Bump to sbt-remote-control dde8acfb1ef78a22b2c1a197c047f54b22fe7d44

This is from the background run branch so has backgroundRun in it.
Use new log events
Kill task
Make match exhaustive
Adding and killing background jobs.

The weird things it does are:
- receive an Execution start (that will start a background job)
- when receiving a JobStarted event, it flags the later execution
- when the execution ends, we artificially keep it alive
- until the job ends
New sbt-rc version and uses echo when running
Moves to sbt 0.13.6 and also latest published versions of sbt-rc and sbt-echo

Conflicts:
	ui/app/assets/plugins/run/runPluginHandler.js
Merge pull request #719 from typesafehub/wip/warry-background-run

Background run