UI/API changes

• BETA: New probe detail pages (enable use in prefs)
  • Overview: Probe info, map, traffic chart, link out to measurements, well-known target stats
  • Network: v4/v6 overview, history
  • Results: grouped time-series charts for well-knowns and built-ins
  • Manage: Sharing, Notifications, Transfer, SSH Key, Write-off
• CHANGE: Community Events card on dashboard for all users
• CHANGE: Add html anchors for dashboard cards
• FIX: Measurement overview double counting on legend when switching between tabs
• FIX: Measurement list not filling in url params