Better help for the user on how to add/edit/delete waypoints

[westis]

Add clear description of how to do when creating a new route, such as adding/editing/deleting waypoints, adding direct waypoints or dragging to create or move waypoints. This can possibly be written below the distance selection.

For point to point there could also be a description that this can be used to "draw" a route, by adding new waypoints after the last one, which is the way most other route planners work.