QML UI: improve point display

[Martin Kolman]

NOTE: this might apply to saved POI and transient points from (online) search results

• show a minimap with point location
  • clicking on this should show the point instantly on the main map screen

• show near points button/list (from saved POI or search)
• other context sensitive options:
  • route to point
  • display coordinates (should support copy paste and preferably show multiple formats)
  • send/share (SMS, e-mail, Twitter, IM, bluetooth, NFC, ...)

• show assorted POI meta-data
  • description
  • address
  • distance from current location

• for search results
  • save to POI
  • edit query (?)

• for saved POI
  • edit & delete