Fails in iOS 10.0.2 in private mode on Chrome and Safari, private mode in macOS Safari

[3vivekb]

When you try to use the tripplanner in:
macOS Sierra: Safari Private Mode
iPhone: Chrome incognito
iPhone: Safari private mode

The app fails to load a trip.

It probably has to do with:
this Thanks @clarle

[clarle]

❤️ 📱 🐛

[clarle]

FYI this happens with both localStorage and sessionStorage:

You'd need to check how sessionStorage is accessed in #14 and fallback if sessionStorage isn't accessible.

[3vivekb]

We could, as a workaround, just have the site pop up a message and fail when it encounters the incognito browsers.

[Kyle-Falconer]

making this "small" to represent the band-aid fix of just notifying the user that we don't support incognito or private mode.