Some locale info/todos
i18n for content script (independent of SDK locale)
Move worker script into own file
Add notes
Allow 'file' protocol by default along with 'https'
comment out redundant event notice
Match height in dialog sections
Ensure addon registration always enables ability to request privileges; ensure that allowed websites are updated whenever approved websites are updated (e.g., if user disallows a site which is an addon, causing it to trigger its unload event which can request privileges again)
* Usability improvement: Allow isRegistered to check version/properties