Jaeger UI v1.12.0

Enhancements

• Identify uninstrumented services (#659, @rubenvp8510)
• Added jaeger ui version to about menu (#606, @alanisaac)
• Explain "self time" in graph view (#655, @yurishkuro)
• Improve duration formatting (#647, @jamesfer)

Fixes

• Pass a function that doesn't return anything to FileUpload component (#658, @rubenvp8510)
• Prevent DAG crashes because of empty service name string (#656, @rubenvp8510)
• Upgrade build to Node 10 (#649, @yurishkuro)