UI/API changes

• BETA: Updates to probe detail pages (enable use in prefs)
• IMPROVED: Error detection and reload after site updates
• FIX: Double clicking on date causes null date in datetimepicker
• FIX: Paging on credits history
• FIX: Sorting and formatting of NTP offset in measurement detail results
• FIX: Improve error handling when missing traceroute data in popup
• FIX: Console error on first time probes map load in statistics