Fix clang compile
Update travis to use boost 1.55
Fix gcc compile
Improved logging for insight stat packets
Insight support for jobs:
* Add insight Groups to Application singleton
* Put JobQueue metrics into "jobq" Group
* Add queued time to Job
* Add per-type Job queue time metrics
* Add per-type Job execution time metrics
* Break JobQueue sources out of the namespace
* Use free function to create the JobQueue
Fix insight object lifetimes in Group
Fix crash on exit in ~InboundLedger
Update beast project file
Fix new RPC dispatcher params
Fix clang compile error
Update Travis matrix:
* New clang compiler target
* Sconstruct changes for clang
* Patches to support clang
[WIP] Add RPC command line converter handlers