Ability to Turn off "Add Stop" message.

[cjca]

Issue:
The "Add Stop" message pops up every so often - that one is very annoying as it can pop up at a crucial time like a busy function and the only way to cancel it is to reach for the screen and click the back arrow (doesn't work with the handlebar back button) and that screen is far away to reach in bad crazy traffic

Resolution:

• Add an option to disable the "Add Stop" message
• Allow the back arrow to dismiss the message.