UI/API changes

• NEW: Use Cases menu in side bar
• NEW: Redesigned and rebuilt DomainMON (in Use Cases menu)
• NEW: Resize dashboard cards
• CHANGE: QuickLook card: resize map
• CHANGE: Results graphs on probe detail now show disconnected periods
• FIX: Search bug on probes list
• FIX: Show no results yet message in measurement detail overview
• TWEAK: Ambassador probe management card text
• TWEAK: Change probe to anchor on anchor detail pages