Driving Scenario Pack 1.8b

- Fixed 'Gravity Off-Road' scenario using the wrong config

- Fixed some typos in the scenario descriptions

- Added '420 Nodeoline' bus route

- Added Offroad Caravanning 2 Scenario

- Added Offroad Caravanning Scenario

- Added 'Overloaded Bird' scenario

- fixed thumbnail for tanker delivery - the long way (utah)

- added tanker delivery - the long way (utah) scenario

- Added Tanker Delivery (Port) Scenario
- Added Container Delivery Scenario

- Fixed Waypoint issue in East Coast USA Scenario
- Added Tanker Delivery (Utah) scenario