[HTTPS-Everywhere] Replacing the rulesets database file

[Jacob S Hoffman-Andrews]

 > Why not include the default.rulesets XML file in the extension, 
then send an XHR to that local file if the XHR to the remote file fails?

I assume you mean rulesets.sqlite? My thought was that there would 
be a default rulesets.sqlite embedded in the extension and at 
install time the extension would copy it into the user profile dir. 
Subsequently it would be loaded from the user profile dir, and the 
copy in the user profile dir would be overwritten by the updater.