Include Warrior version on About page

[reedy]

The about page has no reference to the Warrior version...

[chfoo]

This is seesaw-kit running in the Docker container inside the virtual machine. Both sides will need a way to communicate the version somehow.

[tech234a]

The VM already bindmounts config.json from the VM filesystem into the Docker container. A property could be added to that file, but seesaw-kit would need to be updated to display it.