Catch wrong LngLats

[olafveerman]

The staging environment contains a scenario (Senegal) that doesn't have a correct lat lon, which subsequently blocks the UI (eg. project creation). The underlying issue will be addressed here (WorldBank-Transport/ram-backend#211), but we should also make sure this doesn't block the UI.

vendor-4e91812222.js:1 Uncaught Error: Invalid LngLat latitude value: must be between -90 and 90
    at new o (vendor-4e91812222.js:1)
    at Function.o.convert (vendor-4e91812222.js:1)
    at o.setSouthWest (vendor-4e91812222.js:1)
    at new o (vendor-4e91812222.js:1)
    at Function.o.convert (vendor-4e91812222.js:1)
    at e.fitBounds (vendor-4e91812222.js:1)
    at Object.setupMap (bundle-317726cf72.js:1)
    at Object.componentDidMount (bundle-317726cf72.js:1)
    at t.notifyAll (vendor-4e91812222.js:1)
    at r.close (vendor-4e91812222.js:1)

cc @danielfdsilva