Gridsquare map - enhancements

[AndreasK79]

I've been playing with the gridsquare map. I always wanted all the grids to show at a lower zoom level. After looking into the code, I figured it out. The problem is that the map becomes so slow when moving around, that it is not usable at all. As a compromise, I've done the following:

Start at zoom level 2 instead of 3. This is to show worked/confirmed fields.

Zoom level 2: (this is the same as before)

Zoom level 3: Show all the field name labels and lines, and also show worked/confirmed gridsquares, but no labels (will be way too small to be readable).

Zoom level 4: The same as zoom level 3.

Zoom level 5: Show only worked/confirmed gridsquares, nothing else. (Too slow if everything is shown)

Zoom level 6: and higher: Same as before.

The map is modified to be clickable from zoom level 3 now (popup to show QSOs).

Are anyone interested in these enhancements?

[magicbug]

Yes this seems a good improvement imho

[AndreasK79]

Ok, I'll clean it up and submit a PR.