Add icon_url to subscriptions for custom feed icons
Rename feeds_layers table to subscriptions
Show custom icons per feed
JSON output for Layar custom icons per feed
Merge branch 'refs/heads/custom-icons'
Enable debug logging in production
Change production logging config
Only output icon object if icon_url isn't blank
Don't show icon if icon_url is blank
Stop button label text breaking across lines
Make icons smaller and facing the user
Make icons bigger
Add angle of view to face user
Set icon scale to 1.0