New UI release (GLaDOS)

• Major internal changes to the measurement API (not visible to users)
• Fixed a bug where the ASN/country filter did not work on the network coverage map
• Make the "built-in measurements" tab of the public probes' status page visible for all users
• Minor tweaks to the anchor list and the anchor-as-a-probe page
• Change the colour scheme used for the maps to a more distinctive set