Add panic if backgroundWorker fails (#444)

dapps/valuetransfers/dapp.go

dapps/valuetransfers/fpc.go

plugins/analysis/client/plugin.go

plugins/analysis/dashboard/autopeering_feed.go

plugins/analysis/dashboard/fpc_livefeed.go

plugins/analysis/dashboard/plugin.go

plugins/analysis/dashboard/recorded_events.go

plugins/analysis/server/plugin.go

plugins/autopeering/plugin.go

plugins/bootstrap/plugin.go

plugins/dashboard/drng_livefeed.go

plugins/dashboard/livefeed.go

plugins/dashboard/plugin.go

plugins/dashboard/visualizer.go

plugins/dashboard/ws.go

plugins/database/plugin.go

plugins/gossip/plugin.go

plugins/messagelayer/plugin.go

plugins/metrics/plugin.go

plugins/remotelog/plugin.go