Update:Remora Schema/Notes

• regenerate install.rdf with metadata change
• XPIs containing XPIs (low-priority, just don't barf on it)
• localization of user-facing strings
• user-has-extensions-installed (low priority)
• generate simple pathnames for images/icons
  • extension icon, preview image, screenshots
• extension flags
  • inactive
  • pre-release
  • admin review
  • site-specific
  • requires external software / account
  • has a privacy policy
• extension data additions
  • eula
  • privacy policy
  • notes for reviewers
  • tagline == summary
• reviews and ratings (need a review to add a rating)
• user flags
  • user permissions (externally; cake's ACL stuff)
• addons.description -> versions.description
• rename "versions" to "addon_versions"? nah...
• make addontype_id table instead of enum
  • plugin/search-engine become their own type
• collapse comments into reviews
  • "editors pick" as flag on addons
  • "editor review" to reviews