Implement routing for multiple locations

[mkao006]

• Return multiple locations from generate_new_destination.
• Turn off zooming after the routing.
• Remove previous routing after new routes has been generated.
• Remove the direction information.
• Order the routes

[mkao006]

Routes are ordered using Routing.Plan

[mkao006]

zooming turned off setting useZoomParameter to true.

[mkao006]

The direction information is removed, however, there is still a small box on the top right hand corner. The instruction as per this issue suggested modifying the css file, however, it does not appear to work.

The button also exist even if we specify collapsible as false, which means no button is added.

[mkao006]

multiple location added at 4b6becd

[mkao006]

Now we need to add the route back in.

[mkao006]

route added at 1055ecc