System, Authoritative, and Common URL Schemes

[danielamitay]

As per my comment on Pull Request #5, there are a number of URL schemes that belong to the System:

• sms, shoebox, javascript, prefs, etc., etc.

A number of URL schemes that belong to certain Authoritative apps:

• fb should uniquely identify Facebook, yet is implemented by others.
• Similar to Google/Twitter/Apple apps.

And a number of URL schemes that are common for whatever reason:

• plusplus in Plus+ games
• crystal-46399 in Rovio games

The soon-to-be Developer/ section will need some sort of "Blacklist" of URL schemes that will either be unidentifiable (system and common schemes), or only identify a single app (authoritative schemes).