Fix map tile issue

[bschoenfeld]

Map tiles aren't loading the first time you open the map view on any stop on the home page. Through playing around in the console, I discovered that showing the mapcanvas at different times, or even just pausing execution with a break point seems to fix the problem. I suppose it's an issue with timing of the DOM rendering. This isn't an elegant solution, but it seems to fix the issue. Open to better ideas.