[Suggestion] Hierarchical icon/text drawing

[Sniperhid]

The simple idea here is to render group names/icons when zoomed out, but as you zoom in to switch to drawing individual units and names.

An easy method to check when this is appropriate is to - Calculate the average position on a group, and if all the units are less than a threshold distance (calculate in terms of screen-width of a proportion in the browser) you use a group icon.

A similar sort of distance check between units could be used check if its appropriate to draw text labels. As if there is a lot of clutter drawing the labels only adds 'noise' but if there is else around having the information is a bonus. This would mean in the case that there is only one player and nothing else their name would always be shown on the map.

A while back I implemented similiar ideas into my communities group map tracker. - https://www.youtube.com/watch?v=yZZwG3hdWmo