Improvement UI: show band-name on top over the markers if the shown area is within a band like kiwisdr

[hubertmeier]

In the file bands.json, the upper and lower end of the band are coded:

"name": "160m",
"lower_bound": 1810000,
"upper_bound": 2000000,

It would be nice if the band-name would be displayed if the shown area is within the band-edges, like the kiwisdr. If thats not possible or too much work, then it is perhaps possible to display the two edges of a band as markers (with other color? And an arrow which directs to the other marker?)