Add metrics to BWL service
Store BWL metrics in a map + change scope
Remove CurrentTime from Bwl + update time handling
Move BwlMetrics class into Bwl
Merge branch 'master' into clement-metrics
Fix build by adding TryLater metrics
Merge pull request #38 from wajam/clement-metrics

Add metrics to BWL service
Add QueueCallback.ResultException to wrap Result error
Update log messages
Merge pull request #40 from wajam/manu-result-exception

Add QueueCallback.ResultException to wrap Result error
Merge branch 'master' into clement-trylater

Conflicts:
	bwl-core/src/test/scala/com/wajam/bwl/TestBwl.scala