v3.0.6

What's Changed

• Fix {^%3} Internet Only marker not sent to backbone correctly — messages now echo back with source=3
• Add Internet Only marker variants ({&%3}, {^%3}, {%%3}) and hot pink row color for Internet Only rows
• Update Internet Only row color to #FF00FF
• Set source=3 for Internet Only sends
• Redirect installation instructions to website
• UI improvements and database template update