Display using lines (classic style)

[mskyttner]

Show recoveries using lines on the map

[thomwenn]

When Thord and I was poking around the app today we got an idea that might be possible.
We would like to keep the current map tab and add three more tabs with maps:

• Non-aggregated symbols on all ringing spots in the selected dataset.
• Non-aggregated symbols on all recovery spots in the selected dataset.
• The two maps combined, with ringing and recovery for each bird connected with a line.