Revamp configuration files so that more rules can be added, internal organization is more logical, and descriptions are captured.

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@327 48356398-32a2-884e-a903-53898d9a118a

library/HTMLPurifier/Strategy.php

@@ -9,7 +9,7 @@
  */
 
 HTMLPurifier_ConfigDef::define(
-    'Core', 'EscapeInvalidTags', false,
+    'Core', 'EscapeInvalidTags', false, 'bool',
     'When true, invalid tags will be written back to the document as plain '.
     'text.  Otherwise, they are silently dropped.'
 );