'Create route' option

[sfreytag]

To create a simple route, much like the old version of the app, without the extra feature of the 'create plan'. It should be doable as a UI layer over the same API / DB storage, so feasible. Requested by 3 people now.

[sfreytag]

Under this issue I think I will add a couple of usability tweaks for the create plan option:

1. Don't automatically show the settings modal for the initial route
2. Only automatically show the settings modal for a waypoint