Disable personal device settings

or something. Production hack by @jpkorhonen
Display external services tab for alll
Merge remote-tracking branch 'origin/production-hack'
Display server hostname and rails uptime in footer

For deployment debugging purposes. They are invisble. Select text to
view.
add-external-service.rb -> puavo-add-external-service.rb
Add puavo-web-prompt
Update Gemfile(s)