Draw planned paths for delivery vehicles (#143)

* Draw planned paths for delivery vehicles

* add toggle button for planned paths and make paths obey slider

* add basic doc page and screenshot

* remove old path drawing code ec1e15a

Author: googlemaps-bot

PlannedPaths.md

@@ -0,0 +1,5 @@
+# LMFS Planned Paths
+
+Displays all planned routes for the vehicle.
+
+![Screenshot](screenshots/planned_paths.png)