maps related.. font size of labels.

[krs-world]

When we draw maps, hitting the L button shows the labels in a graph, for example (example, MST assignment), but these labels are scaled up to a huge size. Mousing over shows a very reasonable size for the text. So I think we need to put a limit on the size of the text labels (font size) when we are zooming in.

[krs-world]

Similarly with other symbols like shapes -- these might be harder as they scale with zooming..

[krs-world]

Check 44-MST assignment c++ version related to this issue.. just pushed it with the new Maps API.