Collector via Zipkin proto; 1-click-run

Docker and more lightweight collector (#2)

- [x] Add docker or scripts for building & running everything (Wildfly, MySQL, Zipkin)
- [x] Remove uneeded code & dependencies
- [x] update to use Zipkin reporter
* use  jaeger-spans->zipkin-server adapter
* composite reporter: kensu spans & zipkin
- [x] update how process context is sent
- [x] add auth via Header
- [x] Move config to environment variables so jar could be precompiled
- [ ] Can we also remove jaeger-client now?