New UI release (Umaro)

• Minor fixes on DNS root instance maps
• Fix a bug where probe tags were not suggested properly in the new measurement form
• Expose built-in measurements in a separate tab in the measurement listing
• Added more info to the measurement UI about the specification of the measurement
• Credit archive download now supports fragmented JSON format
• Fix an edge case where the traceroutes did time travel before history began
• Various fixes to LatencyMON and its documentation