Add UUID to every FAQ entry

[thorsten]

Using UUIDs, the administrator has two rewrite options:

* the current approach (with the question’s text – prone to changes and possibly long);
* the record UUID (“permanent”).

The UUID has also the advantage of being shorter (but not as user friendly as the first option), and may obfuscate the internal query/DB implementation to the external user.

URLs with “v.4” UUIDs don’t need to be URL-encoded (percent-encoding).

Another advantage: the record's UUID value may be used in the RSS optional element (this avoids feed validators complaints).

Examples

* Without rewrite statements
  http://faq.example.com/index.php?action=artikel&cat=1&id=23&artlang=en

* With the current rewrite method
  http://faq.example.com/content/1/23/en/the-question_s-text-that-is-prone-to-changes_and-possibly-long_very-long-or-with-diacritic-characters.html

* Using UUIDs on the rewrite
  http://faq.example.com/a7a67b6c-f7c8-4dc4-9da5-235a64d48e5a 

For non-specialists
[1] RFC 4122. More recent documentation about this subject is available.
[2] A UUID “v.1” contains the creation date/time but has security problems – it includes the host MAC address.