Vehicle Images and more

v1.1

1. Vehicle images
   1. added new openHAB items for image settings
   2. added overview on the auth page
   3. added a function to download the images to your openHAB directory
   4. added a check for the needed auth key from your MB project
   5. added the option to change the name prefix and download path of the images
2. added a check for the correct redirect url in the auth process
3. added new openHAB item for redirect url
4. updated the readme file (app=project, better description, ..)
5. better error description in the script and website
6. You can now customize your itemprefix according to your needs
7. added a oh3 mainui widget to the examples (thanks to muelli1967)
8. Auth website
   1. mouseover tooltips for auth data items
   2. you can now enter the credentials in the auth website
   3. you can now change the switch items in the auth page
   4. better error checking
   5. reload button
   6. button for copy the redirect url

First release

First release