1129 - add map.postInvalidate() on resume to force a redraw of the points
I can't repro, but this would make sense to fix #1120
Instead of attempting to invalidate a small rect when a point is added, which reportedly is causing bugs where the points aren't drawing, just do a full invalidate.
Add addition zoom for medium screen
Merge pull request #1135 from garvankeeley/1129-invalidate-map

1129 - add map.postInvalidate() on resume to force a redraw of the points