Merge work by John Scipione on the Haiku Book.

* Some new classes documented
 * Screenshots for the interface kit controls
 * A lot of typo fixes
 * Some css tweaks

This has some backporting to the current version of Doxygen, since 
there are experiments to get coloring similar to the one in the Be 
Book that will hopefully be upstreamed in Doxygen.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42608 a95241bf-73f2-0310-859d-f6bbb57e9c96

docs/user/app/Handler.dox

@@ -444,13 +444,14 @@ ShowImageApp::MessageReceived(BMessage *message)
 /*!
 	\fn BHandler * BHandler::ResolveSpecifier(BMessage *msg, int32 index,
 		BMessage *specifier, int32 form, const char *property)
-	\brief Undocumented.
+	\brief Determine the proper handler for a scripting message.
 */
 
 
 /*!
 	\fn status_t BHandler::GetSupportedSuites(BMessage *data)
-	\brief Undocumented.
+	\brief Reports the suites of messages and specifiers that derived classes
+		understand.
 */