Take away separation of admin and user roles.
Move admin init actions into class.
Separate Admin from User actions.
Add DebugModel with nice helper methods.
Working with new DebugModel.
Fix bad constant reference bug.
Require DebugModel.
Semicolon
Bug fixes.
Email human readable message.
Refactor

class TwilioAdminController -> class SettingsController
$twilio_options -> $twilio_settings
Move admin/controller/twilio.php to admin/controller/settings_controller.php
Hide dialog by default so it's not FUCed up.
Renamed lightbox.css to shortcodes.css
Rename lightbox.css to shortcodes.css
Use title and dialog in lightbox.
Formatting dialog title.
Formatting dialog.
Refactor

render_options_page() -> render_settings_page()
HTML formatting.